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Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 52: Static Structures (E.G., Buildings)

The residual class for static structures. It includes on site erected structures generally identified by terms such as: civil engineering, public works, shelter, housing, buildings or masts and other related components used in such structures, e.g., panels, beams, columns. etc. Also, included are selected structurally similar components, such as, table top panels, poles, posts, window sash elements or door panels even though not disclosed as specialized as components of a building structure. Also, are included processes, machines and implements used in the construction of such structures which are not elsewhere provided for.

Subclass 173.3: With a sunlight activated device (e.g., passive solar or photoelectric)
Subclass 223.6: Slab or panel construction
Subclass 717.03: Flexible strip

Class 313: Electric Lamp And Discharge Devices

This is the generic class for electric lamp and electric space discharge device structure. Examples of such devices are electric incandescent lamps, gas or vapor filled electric discharge tubes, including lamps, mercury arc devices, vacuum discharge tubes, radio tubes, cyclotrons, cathode-ray tubes, photosensitive discharge devices, secondary emission electron multipliers, spark plugs, and open air arc and spark devices.

Subclass 504: Organic phosphor
Subclass 505: With electrode matrix
Subclass 506: Plural layers

Class 117: Single-Crystal, Oriented-Crystal, And Epitaxy Growth Processes; Non-Coating Apparatus Therefor

Processes consisting of the single or repeated unit operation of forming a single-crystal of any type of material, including inorganic or organic; such processes combined with perfecting operations; and apparatus for conducting non-coating processes of this class.

Subclass 87: Forming a platelet shape or a small diameter, elongate, generally cylindrical shape (e.g., whisker, fiber, needle, filament)

Class 423: Chemistry Of Inorganic Compounds

This class provides for what is generally termed the field of inorganic chemistry. It includes inorganic compounds, nonmetallic elements and processes of producing the same involving a chemical reaction. The products are generally in a relatively pure state but may be a mixture with no other utility than as a source material for an inorganic compound or element. This includes metal compound products useful in metallurgical processes of obtaining free metals.

Subclass 245.1: Organic component
Subclass 345: Of carbon (i.e., silicon carbide)
Subclass 447.1: Fiber, fabric, or textile
Subclass 445B: Fullerene (e.g., C60, C70, etc.)

Class 427: Coating Processes

This is the generic class for: A. applying or obtaining a coating on a surface. The coating may be hard or soft, permanent or transitory, supplied solely by extraneous materials or supplied wholly or in part by the base material. B. impregnating a base by causing a coating material to extend or penetrate into the base material, or into the interstices of a porous, cellular or foraminous material. C. taking preparatory treatments of the base material, subsequent treatments of the coated base material and other ancillary noncoating operations claimed, per se, processes limited to etching for making a base more compatible with, or adherent to, the coating wherein the base is the substrate (work) onto which a coating is applied are included.

Subclass 589: Silicon carbide

Class 977: Nanotechnology

This art collection provides for disclosures related to: nanostructure and chemical compositions of nanostructure; device that include at least one nanostructure; mathematical algorithms, e.g., computer software, etc., specifically adapted for modeling configurations or properties of nanostructure; methods or apparatus for making, detecting, analyzing, or treating nanostructure; and specified particular uses of nanostructure. the term "nanostructure" is defined to mean an atomic, molecular, or macromolecular structure that: has at least one physical dimension of approximately 1-100 nanometers; and possesses a special property, provides a special function, or produces a special effect that is uniquely attributable to the structure s nanoscale physical size.

Subclass 742: Carbon nanotubes (CNTs)
Subclass 762: Nanowire or quantum wire (axially elongated structure having two dimensions of 100 nm or less)
Subclass 775: Nanosized powder or flake (e.g., nanosized catalyst, etc.)
Subclass 777: Metallic powder or flake
Subclass 842: For carbon nanotubes or fullerenes
Subclass 843: Gas phase catalytic growth (i.e., chemical vapor deposition)
Subclass 890: Deposition of materials (e.g., coating, CVD, or ALD, etc.)

Class 219: Electric Heating

This class includes all those devices commonly known as electric heaters, electric-heating metal working apparatus, electrically-heated tools and instruments. This is the generic class for electric heating devices, per se. Devices and systems equipped with electric heating means in which the electric heating means is combined with or includes specific other art structure whereby the heated material is withdrawn, stored or otherwise utilized will also be classified in the appropriate other art class to which it pertains.

Subclass 679: With diverse device

Class 264: Plastic And Nonmetallic Article Shaping Or Treating: Processes

Processes for molding, casting, or shaping of nonmetallic materials to produce articles. Liquid or melt comminuting of materials other than glass or metal. Uniting or compacting of bulk or randomly assembled particles. Furnace Lining or repair. Melt shaping in the absence of a mold or shaping surface, e.g., spheroidizing of particles. Working or treatment of nonmetallic materials not otherwise provided for.

Subclass 489: Microwave (e.g., 2.45 gigahertz, etc.)

Class 505: Superconductor Technology: Apparatus, Material, Process

This is the generic class for subject matter involving (a) superconductor technology above 30 K and (b) Art collections involving superconductor technology. Apparatus, devices, materials, and processes involving such technology are included

Subclass 480: Utilizing electromagnetic wave energy, ion, or plasma

Class 343: Communications: Radio Wave Antennas

Antennas for the transmission of radio wave energy through the natural media - air, earth, water, etc. for point-to-point communication or for the reception of such transmitted radio wave energy. Aparatus and systems which constitute part of an antenna transmission or reception.

Subclass 700MS: Microstrip
Subclass 720: Combined with diverse-type art device
Subclass 728: Including loop-type antenna
Subclass 730: Including balanced doublet-type antenna
Subclass 772: Wave guide type (e.g., horn)
Subclass 785: Dielectric type (e.g., polystyrene rod)
Subclass 793: Balanced doublet - centerfed (e.g., dipole)
Subclass 795: Sheet or wing type
Subclass 834: Antenna with parasitic reflector
Subclass 840: Parabolic-type reflector with active antenna at focus
Subclass 846: With grounding structure (including counterpoises)
Subclass 886: Horizontally suspended between poles or standards
Subclass 907: Antenna components
Subclass 909: Refracting means and radio wave energy filters (e.g., lenses and polarizers)
Subclass 912: Reflector or director

Class 705: Data Processing:Financial, Business Practice, Management, Or Cost/Price Determination

This is the generic class for apparatus and corresponding methods for performing data processing operations, in which there is a significant change in the data or for performing calculation operations wherein the apparatus or method is uniquely designed for or utilized in the practice, administration, or management of an enterprise, or in the processing of financial data. It also provides for apparatus and corresponding methods for performing data processing or calculating operations in which a charge for goods or services is determined.

Class 331: Oscillators

This is the generic class for electrical oscillators.

Subclass 11: Plural comparators or discriminators
Subclass 16: Tuning compensation
Subclass 17: Particular error voltage control (e.g., intergrating network)
Subclass 18: With reference oscillator or source
Subclass 1A: AFC with logic elements
Subclass 25: Signal or phase comparator

Class 428: Stock Material Or Miscellaneous Articles

This is the residual class for: 1. Stock material in the form of a structurally defined web, sheet, rod, strand, fiber, filament, cell, flake, particle not provided elsewhere. 2. Stock material in the form of a web, sheet, mass or layer which consists of or contains a structurally defined constituent or element. 3. A nonstructural laminate defined merely in terms of the composition of one or more layers. 4. An article of manufacture or an intermediate-article not provided for elsewhere. 5. A process for applying an impregnating material to a naturally solid product such as a wood beam, a sheet of leather or a stone, or for applying a coating to a base, and which process includes no significant method step.

Subclass 216: No layer or component greater than 5 mils thick
Subclass 336: 1 mil or less
Subclass 690: Fluroescent, phosphorescent, or luminescent layer
Subclass 698: Carbide-, nitride-, or sulfide-containing layer
Subclass 704: Of B, N, P, S, or metal-containing material

Class 382: Image Analysis

This is the generic class for apparatus and corresponding methods for the automated analysis of an image or recognition of a pattern. Included herein are systems that transform an image for the purpose of (a) enhancing its visual quality prior to recognition, (b) locating and registering the image relative to a sensor or stored prototype, or reducing the amount of image data by discarding irrelevant data, and (c) measuring significant characteristics of the image.

Subclass 107: Motion or velocity measuring
Subclass 154: 3-D or stereo imaging analysis
Subclass 255: Focus measuring or adjusting (e.g., deblurring)
Subclass 289: Determining amount an image is rotated or skewed
Subclass 291: Determining the position of an object
Subclass 293: Changing the image coordinates
Subclass 295: To position or translate an image
Subclass 296: To rotate an image

Class 345: Computer Graphics Processing And Selective Visual Display Systems

Processes and apparatus for selective electrical control of two or more light-generating or light-controlling display elements* in accordance with a received or stored image data signal. The image data includes character, graphical information or display attribute data. The image data may include, for example, information data from a peripheral input device, from the reception of a television signal, from the recognition of image data, or from the generation or creation of image data by a computer.

Subclass 419: Three-dimension
Subclass 420: Solid modelling
Subclass 421: Hidden line/surface determining
Subclass 649: Rotation
Subclass 656: Image based (addressing)
Subclass 657: By arbitrary angle
Subclass 659: Image rotates in response to display device orientation
Subclass 672: Translation
Subclass 682: Image based (addressing)

Class 359: Optical: Systems And Elements

Optical elements included in this class are: Lenses; Polarizers; Diffraction gratings; Prisms; Reflectors; Filters; Projection screens; Optical Modulators; Optical Demodulators. Among the optical systems included in this class are: Compound lens systems; Light reflecting signalling systems (e.g., retroreflectors); stereoscopic systems; Binocular devices; Systems of lenticular elements; Systems involving light interference; Glare reducing systems; Light dividing and combining systems; Light control systems (e.g., light valves); building illumination with natural light; Systems for protecting or shielding elements; Optical systems whose operation depends upon polarizing, diffracting, dispersing, reflecting, or refracting light; kaleidoscopes. Further included are certain apertures, closures, and viewing devices of a specialized nature which involve no intentional reflection, refraction, or filtering of light rays. This class also includes optical elements combined with another type of structure(s) to constitute an optical element combined with a nonoptical structure or a perfection or improvement in the optical element.

Subclass 470: Compensates for camera position (e.g., plotting or mapping type)

Class 708: Electrical Computers: Arithmetic Processing And Calculating

This is the generic class for electrical apparatus and corresponding methods for performing calculation operations. There are three main divisions: 1. electrical hybrid calculating computers; 2. electrical digital calculating computers; 3. electrical analog calculating computers.

Subclass 402: Discrete Cosine Transform (i.e., DCT)

Class 375: Pulse Or Digital Communications

This is the generic class for pulse or digital communication systems using electrical or electromagnetic signals. Such communication includes transmitting an intelligence bearing signal from one point to another in the form of discrete variations in some parameter of the electrical or electromagnetic signal.

Subclass 240.02: Adaptive
Subclass 240.12: Predictive
Subclass 240.16: Motion vector

Class 544: Organic Compounds -- Part Of The Class 532 Series

The classes of the 532 series embrace monomeric organic carbon compounds and polymeric organic carbon compounds that are not solid synthetic resins, natural rubbers, or hydrocarbons.

Subclass 234: Tricyclo ring system having the 1,2-diazine ring as one of the cyclos

Class 703: Data Processing:Structural Design, Modeling, Simulation, And Emulation

This class provides for electrical data processing apparatus and corresponding methods for the following processes or apparatus: 1. for sketching or outlining of layout of a physical object or part. 2. for representing a physical process or system by mathematical expression. 3. for modeling a physical system which includes devices for performing arithmetic and some limited logic operation upon an electrical signal, such as current or voltage, which is a continuously varying representation of physical quantity. 4. for modeling to reproduce a nonelectrical device or system to predict its performance or to obtain a desired performance. 5. for modeling and reproducing an electronic device or electrical system to predict its performance or to obtain a desired performance. 6. that allows the data processing system to interpret and execute programs written for another kind of data processing system.


Class 362: Illumination

Means and processes for casting visible radiant energy in at least one direction to render objects in that direction visible.

Subclass 147: Wall or ceiling
Subclass 218: With ventilating or cooling means
Subclass 234: Combined

Class 438: Semiconductor Device Manufacturing: Process

This class provides for manufacturing a semiconductor containing a solid-state device for the following purposes: (a) conducting or modifying an electrical current, (b) storing electrical energy for subsequent discharge within a microelectronic integrated circuit, or (c) converting electromagnetic wave energy to electrical energy or electrical energy to electromagnetic energy. Also operations involving: (1) coating a substrate with a semiconductive material, or (2) coating a semiconductive substrate or substrate containing a semiconductive region. It also provides for operations involving etching a semiconductive substrate or etching a substrate containing a semiconductive region. The class provides for packaging or treatment of packaged semiconductor.

Subclass 694: Combined with coating step
Subclass 720: Electrically conductive material (e.g., metal, conductive oxide, etc.)
Subclass 947: Subphotolithographic processing

Class 363: Electric Power Conversion Systems

Conversion systems wherein a single electrical source circuit is coupled to a single electrical load circuit.

Subclass 21.02: For resonant-type converter
Subclass 56.12: Transient protection (e.g., snubber, etc.)

Class 323: Electricity: Power Supply Or Regulation Systems

This is the generic class for electrical systems wherein a single electrical source is coupled to a single electrical load circuit and means are provided which control the magnitude or level of the current or voltage of either or both of said circuits and/or the phase angle between the current or voltage of either or both of said circuits. This is also the generic class for transformer systems and impedance systems.

Subclass 222: Using choke and switch across source
Subclass 268: Including plural final control devices
Subclass 272: Parallel connected
Subclass 312: For current stabilization

Class 327: Miscellaneous Active Electrical Nonlinear Devices, Circuits, And Systems

This is the residual class for electrical devices, circuits or systems having an output not directly proportional to its input and comprising at least one component which can provide gain or can route electrical current and which device, circuit or system does not form a complete system such as is classified specifically elsewhere or a subcombination of utility only in such elsewhere classified system.

Subclass 382: Parasitic prevention or compensation (e.g., parasitic capacitance, etc.)
Subclass 551: Unwanted signal suppression

Class 333: Wave Transmission Lines And Networks

Electric wave transmission systems wherein electromagnetic wave energy is guided or constrained by a wave transmission device of the long line type other than loaded lines. Included are passive wave transmission networks simulating the characteristics of a long line wave transmission systems or wave guides, such as artificial lines, delay networks, resonators, impedance matching networks, equalizers, wave filters and transmission line terminations. Passive coupling networks and terminating networks having either lumped or distributed electrical circuit parameters and having impedance characteristics. Smoothing type wave filters having shunt capacitance, or series inductance. Networks including a wave transmission device and means for decreasing the amplitude range of the signal applied to the transmission device as the signal increases in amplitude and means for increasing or restoring the amplitude range of the signal after the transmission over the transmission device. Passive networks for producing an output wave which is the time derivative or time integral of the input wave. Systems including active elements for producing across at least two of the system terminals a negative resistance, and/or an inductance, or capacitance which may be positive or negative. Wave traps using long line elements.

Subclass 181: Smoothing type (e.g., direct current power supply filters or decoupling filters)
Subclass 185: Having significant physical structure

Class 315: Electric Lamp And Discharge Devices: Systems

Electric lamp and electric space discharge device systems: structural combinations with circuit elements; structural combinations with heating and/or cooling means; cathode-ray tubes; lamps and/or discharge devices as sole load devices; lamps; electric space discharge devices gas or vapor discharge devices; high vacuum-type discharge devices, and gas or vapor-type discharge devices claimed broadly; plural load device systems; art uses and combinations with art devices; testing electric lamps and discharge devices; and operating a lamp or a gas or vapor discharge device.

Subclass 46: Filament, electric heater, or resistance in shunt with the discharge electrodes of a discharge device load
Subclass 49: Filament or electric heater in series with a discharge device load
Subclass 139: Polyphase supply circuit

Class 216: Etching A Substrate: Processes

Chemical etching processes for treating articles of commerce or intermediate articles not otherwise provided for in which one of the manufacturing steps includes a chemical etching step (use of an etchant) and wherein the material treated is not completely removed.


Class 257: Active Solid-State Devices (E.G., Transistors, Solid-State Diodes)

This class provides for active solid-state electronic devices, that is, electronic devices or components that are made up primarily of solid materials, usually semiconductors, which operate by the movement of charge carriers - electrons or holes - which undergo energy level changes within the material and can modify an input voltage to achieve rectification, amplification, or switching action, and are not classified elsewhere.

Subclass E21.214: To change their surface-physical characteristics or shape, e.g., etching, polishing, cutting (EPO)

Class 126: Stoves And Furnaces

Apparatus for the application of heat. It comprises cooking and heating stoves, hot-air furnaces, and accessories; hot-air radiators and heating drums; open liquid heaters, steaming apparatus, dampers, fireplaces, and stovepipes. It includes the fuel burner when combined with the stove or furnace structure; combinations of a particular stove or furnace structure with a closed liquid heater or steam generator; liquid heaters of only the nonpressure type unless they are structurally tied to the stove or furnace or form a necessary part thereof, and grates of general use in stoves, hot-air furnaces, or boiler furnaces.

Subclass 633: With fluent medium passage in floor or wall of room
Subclass 643: With heat exchanger

Class 62: Refrigeration

(1) processes and apparatus peculiar to removing heat from a substance, usually by a change of phase of a coolant or refrigerant, as by evaporation, melting or sublimation, (2) the resultant product of part (1), e.g., ice, liquefied or solidified gases, and (3) processes and apparatus peculiar to handling the latter as a stored product, not elsewhere provided for.

Subclass 262: Window connected or mounted

Class 250: Radiant Energy

This class provides for all methods and apparatus for using, generating, controlling or detecting radiant energy, combinations including such methods or apparatus, subcombinations of same and accessories therefore not classifiable elsewhere.

Subclass 462.1: Self-luminous article

Class 436: Chemistry: Analytical And Immunological Testing

This is the generic class for: chemical test standards, analytical compositions, and processes which involve a chemical reaction for determining qualitatively or quantitatively the presence of a chemical element, compound or complex in a composition or a chemical compound, or an element or radical in a compound; processes for analysis which involve an in vitro antigen-antibody, immunological or protein binding interaction other than those involving a living antigen, or enzyme label; and processes of analysis or study of the chemical properties of a sample; the physiological effect of a sample; or chemical determination of a physical property of a sample. Compositions and their mere methods of use of thermoparticulating compositions. Combinations of tests or measurements with methods of regulating a chemical reaction not otherwise provided for in a chemical synthesis class or otherwise.

Subclass 164: OPTICAL RESULT

Class 422: Chemical Apparatus And Process Disinfecting, Deodorizing, Preserving, Or Sterilizing

This is a generic class for (1) processes of disinfecting, deodorizing, preserving or sterilizing and (2) apparatus for (a) carrying out chemical reactions, (b) preparing or treating chemical compounds or compositions even though only a physical reaction is discernible, (c) performing an analysis which involves either a chemical reaction or a physical reaction not elsewhere provided, for and (d) carrying out the above processes not elsewhere provided for.

Subclass 211: Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc.

Class 65: Glass Manufacturing

(1) processes and/or apparatus for making stock or articles of those ceramic masses, which generally include a "glass former" or an oxide which approaches glass forming properties, in their composition and which are formed by fusion of raw materials (generally mixtures, most of which are of an earthy nature - as distinguished from metallic, organic, etc., - silicon, silica, and slag are included) at ordinary high furnace temperatures, by working (molding, shaping, etc.) of the mass after being melted or changed to a plastic or softened state by heating; and (2) processes and/or apparatus for treating stock or articles made

Subclass 386: Planar waveguides
Subclass 394: Ion implantation
Subclass 400: Ion exchange utilized
Subclass 425: Electromagnetic, magnetic, wave, or particulate energy utilized

Class 707: Data Processing:Database And File Management Or Data Structures

This is the generic class for data processing apparatus and corresponding methods for the retrieval of data stored in a database or as computer files. It provides for data processing means or steps for generic data, file and directory upkeeping, file naming, and file and database maintenance including integrity consideration, recovery, and versioning. There are three main divisions: 1. database and file accessing; 2. database schema and data structure; 3. file and database maintenance.

Subclass E17.048: Entity relationship models (EPO)

Class 318: Electricity: Motive Power Systems

This is the generic class for system of electrical supply and/or of control for one or more electric motors where the electric motor is claimed in combination with such systems of supply and/or control and the electric motor as claimed constitutes the ultimate and sole electrical load device supplied by the system or constitutes the ultimate and sole electrical device being controlled.

Subclass 615: By auxiliary feedback loop
Subclass 667: With a bridge in the feedback circuit
Subclass 807: Frequency control
Subclass 810: With voltage pulse time control

Class 324: Electricity: Measuring And Testing

This is the residual home for all subject matter, not elsewhere classified, relating to the measuring, testing (or sensing) of electric properties, (e.g., determining ground resistivity, determining frequency of an alternating current, determining kilowatt hour demand), or the measuring, testing or sensing of nonelectric properties by electric means (e.g., determining moisture, a nonelectric property, by measuring conductance with a resistance bridge; determining speed, a nonelectric property by use of an electric tachometer).

Subclass 163: Including speed analog electrical signal generator
Subclass 177: Including motor current or voltage sensor
Subclass 207.11: Displacement
Subclass 207.12: Compensation for measurement

Class 702: Data Processing:Measuring, Calibrating, Or Testing

This class provides for apparatus and corresponding methods wherein the data processing system or calculating computer is designed for or utilized in an environment relating to a specific or generic measurement system, a calibration or correction system, or a testing system.

Subclass 141: Accelerometer
Subclass 142: Speed

Class 704: Data Processing:Speech Signal Processing, Linguistics, Language Translation, And Audio Compression/Decompression

This is the generic class for apparatus and corresponding methods for constructing, analyzing, and modifying units of human language by data processing, in which there is a significant change in the data.This class also provides for systems or methods that process speech signals for storage, transmission, recognition, or synthesis of speech; and for systems or methods for bandwidth compression or expansion of an audio signal, or for time compression or expansion of an audio signal. There are three main divisions: linguistics; speech signal processing; and audio compression.

Subclass 208: Voiced or unvoiced
Subclass 210: Silence decision
Subclass 211: Time
Subclass 214: Voiced or unvoiced
Subclass 215: Silence decision
Subclass 233: Detect speech in noise
Subclass 235: Speech to image

Class 713: Electrical Computers And Digital Processing Systems: Support

This class provides, within a computer or digital data processing system, for the following processes or apparatus for: 1. establishing original operating parameters or data for a computer or digital data processing system, such as, allocating extended or expanded memory, specifying device drivers, paths, files, buffers, disk management, etc.; 2. for changing system settings or operational modes in a computer or digital data processing system after they have been set; 3. for increasing a systemís extension of protection of system hardware,software, or data frm maliciously caused destruction, unauthorized modification, or unauthorized disclosure; 4. for modifying or responding to the available power to a computer or digital data processing system or programmable calculator; 5. for synchronization of two or more processors; 6. wherein a clock or timing signals, timing pulses, or data associated with the control or regulation of any one or combination of processing components, memory components, and peripheral components are caused to operate in synchronization; 7. for generation, division, or distribution of clock signals, pulse signals, or timing signals in a computer or digital data processing system from one or more sources into groups of continuous and successive time increments, and including event timing and counting, and the correction of the clock signals, pulse signals, or timing signals; 8. wherein there is a significant temporal, incremental or sequencing control provided to one or more computers, digital data processing systems, processors, memory, or peripherals, or to data transmission between these systems or components.

Subclass 168: Particular communication authentication technique
Subclass 169: Mutual entity authentication
Subclass 170: Authentication of an entity and a message
Subclass 171: Having key exchange
Subclass 172: Intelligent token
Subclass 173: Pre-loaded with certificate

Class 726: Information Security

This class provides, within a computer or digital data processing system, for processes or apparatus for increasing a system s extension of protection of system hardware, software, or data from maliciously caused destruction, unauthorized modification, or unauthorized disclosure. It provides for protection of data processing systems, apparatus, and methods as well as protection of information and services. Subject matter included in this class includes security policies, access control, monitoring, scanning data, countermeasures, usage control, and data protection from maliciously caused destruction, unauthorized modification, or unauthorized disclosure, and includes protection of hardware, and user protection, e.g., privacy, etc.

Subclass 3: Network
Subclass 4: Authorization
Subclass 5: Credential
Subclass 6: Management
Subclass 7: Usage

Class 502: Catalyst, Solid Sorbent, Or Support Therefor: Product Or Process Of Making

This class provides for (1) a mixture of materials intended to catalyze a reaction or to sorb a component of a fluid or (2) certain single materials specifically structured to catalyze a reaction or sorb a component.

Subclass 73: And Group III or rare earth metal (Al, Ga, In, Tl, Sc, Y) or Lanthanide containing
Subclass 74: And Group VIII (Iron Group or Platinum Group) containing
Subclass 87: Support per se

Class 75: Specialized Metallurgical Processes, Compositions For Use Therein, Consolidated Metal Powder Compositions, And Loose Metal Particulate Mixtures

Specialized metallurgical processes for producing or recovering metals from metal compounds, ores, or scrap metal and for refining liquid metal and for compositions used in these specialized metallurgical processes, consolidated metal powder compositions, and loose metal particulate mixtures.

Subclass 10.11: With zone melting or fractional crystallization