Tynax ~ Patent Library

Patent for Sale:

Optical Network    

A portfolio of 17 issued US patents and 30+ international counterparts for optical networks


The portfolio includes patents in the areas of:

An optical fiber splicing device of the rail type for mechanically splicing optical fibers having a single or multi-core structure.

Equipment for stabilizing the light output frequency of each laser diode for pulse light and probe light for measuring the distribution of strain, by controlling the change of the light output frequency of the laser diode due to external causes by input current of the laser diode.

A tray for storing and organizing optical ribbon fiber splices and an excess length of the optical ribbon fiber easily.

A large capacity optical asynchronous transfer mode (ATM) switch in which the limited capacity of the switch is recovered and large capacity switching can be attained.

A semiconductor technology for aligning an optical device with an optical fiber and a planar lightwave circuit (PLC), using a passive alignment process.

Buffering data by using an optical buffer so that optical cells of asynchronous transfer mode can be stored and processed without the restriction of processing time for a high speed network.

A process for mid-span branching of optical fiber cable which makes the mid-span branching possible without excess length of the optical fiber cable.

A multiwave optical buffer using a loop mirror which can store cells having low priority, sequentially output the cells in a preferable time, and arrange and output cells which are wave-multiplexed in a wave-multiplexed system and inputted at the same time, on a time axis in accordance with an electrical external control signal, in order to prevent conflicts among the cells to be outputted to an identical channel on a high-speed time division multiplexing local network or backbone.

A technique for manufacturing a fiber package incorporating dispersion compensating gratings using a ribbon-type fiber stack.

A process for requesting grant for MAC protocol in PON and a computer readable storage medium storing instructions for executing a method for requesting a grant in an optical subscriber network in which an Optical Line Termination (OLT) connects remote Optical Network Units (ONUs) by an optical fiber and passive optical devices.

A dispersion flattened fiber with high negative dispersion to be utilized for a dispersion compensation in a conventional single mode fiber (SMF) or a non-zero dispersion shifted fiber (NZDSF) by setting up a dispersion thereof to be high negative.

Optical communication system using an optical modulator having polarization dependency.

A cable machine for pulling a cable installed in an underground cable pipe.

Equipment for injecting liquid crystal into a hollow fiber or a planar waveguide.

Optical cable identification equipment in a remote place.

A wavelength division multiplexing-passive optical network (WDM-PON) system, configured to multiplex and divide laser lights having various wavelengths each having the same intensity in a central office to supply the laser lights to subscribers so that several subscribers share a light source having the same wavelength.

The seller may consider selling these patents individually.

Patent Summary

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

Class 385: Optical Waveguides

(1) An optical waveguiding element, which conveys light from one point to another through an optically transparent elongated structure by modal transmission, total internal reflection, or total reflectorization. (2) A combination of an optical waveguiding element with an additional broadly recited optical element which couples light or a combination. (3) A combination of an optical waveguiding element with structure which mechanically joins this waveguiding element with another or with a diverse optical element. (4) An optical modulator where the modulation of a light wave characteristic is performed exclusively within an optical waveguiding element. (5) Other miscellaneous devices formed of an optical waveguide (e.g., a waveguide sensing device) and supplemental devices which are limited to use with an optical waveguide (e.g., an external clamp or retainer).

Subclass 114: Ribbon cable
Subclass 125: Utilizing nonsolid core or cladding
Subclass 127: Concentric
Subclass 13: Including physical deformation or movement of waveguide
Subclass 135: Splice box and surplus fiber storage/trays/organizers/ carriers
Subclass 28: Coupling between modes in a waveguide or fiber
Subclass 96: Fusion splicing
Subclass 97: Alignment of fiber ends prior to splicing
Subclass 98: End-to-end (butt) coupling
Subclass 99: Including splice joint reinforcement

Class 356: Optics: Measuring And Testing

Methods and apparatus (1) for analyzing light to measure or test its characteristics, such as intensity, color and polarization; (2) for determining the optical or nonoptical properties of materials or articles by noting, as by inspection, measurement, or test the effect produced by the materials or articles on light associated therewith; and (3) for measuring the dimensions of structures or the spatial relationships such as distances or angle bearings of spaced points by comparison of the respective properties (usually direction or spatial position) of the light from these points or by comparison of the properties of these lights with some scale or standard. The light analyzing includes or is for spectroscopy, interference, polarization, beam direction or pattern, focal position of a light source, shade or color, and photometers. The material or article properties determined are or involve crystal or gem examination, material strain analysis, blood analysis, optical pyrometers, egg candling, cutting blade sharpness, oil testing, document verification, flatness, lens or reflector testing, refraction testing, monitoring moving webs or fabrics, light transmission or absorption, light reflection, inspection for flaws or imperfections in materials, and thread counting. The dimensioning and spatial relationship determination includes triangulation by a light beam, contour plotting, range or height finders, motion stopping, velocity or velocity/height measuring, sighting where the optical element or reticle moves with the sighted object, particle size determination, particle light scattering, electrophoresis, angle measuring or axial alignment, mensuration or configuration comparison, alignment in a lateral direction, and fiducial instruments.


Class 372: Coherent Light Generators

An assembly of electrical, mechanical, and optical components produces an intense, coherent, directional beam of light by stimulating electronic, ionic, or molecular transitions to lower energy levels.

Subclass 32: Frequency

Class 398: Optical Communications

This class provides for all types of communication systems in which optical signals are used to transmit modulated carrier wave information between points. Such communication includes transmitting an intelligence-bearing signal from one point to another in the form of variations in a characteristic of the light wave. The communication may be through free space, fibers or waveguides. These are used to transfer the information with an optical beam, and this beam can be used in various communication schemes to enable the most effective or desired method of moving the information, including optical multiplexing when plural information signals or plural transmitters and receivers are utilized.

Subclass 48: Wavelength
Subclass 49: Router
Subclass 58: Optical local area network (LAN)
Subclass 63: Passive star
Subclass 87: Grating
Subclass 98: Time division

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 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 428: Collapsing tube

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 337: Correction of deleterious effects

Class 254: Implements Or Apparatus For Applying Pushing Or Pulling Force

Implements or apparatus for applying a pushing or pulling force directly to either (a) an object to be moved, or (b) a generally stationary object upon which pressure or tension is to be exerted. It comprises jacks (including lifting jacks, floor jacks, and analogous implements), extracting apparatus (including stump pullers and nail extractors), tensioning apparatus (including belt, carpet and wire stretchers), hoist trucks, and cable-type load hauling or hoisting apparatus. Also included in this class is the subcombination of a cable guide which (1) is a component of, or used in combination with, an implement or an apparatus of this class, and (2) is intended to guide a cable which is directly connected to either the object or an object-supporting or -engaging member.

Subclass 134.5: Tractor for pulling wire (e.g., battery-powered)
Subclass 215: Juxtaposed to material or cable at single locus
Subclass 221: With projections or apertures on drum for engagement with complementary formations on material or cable
Subclass 227: With ground-engaging support means

Class 349: Liquid Crystal Cells, Elements And Systems

Cells, elements, and systems which include molecules of a material having both liquid and crystalline properties. Included in this class are those which have a significant liquid crystal cell detail or liquid crystal response or properties, and in which the liquid crystal controls or changes the optical properties of electromagnetic radiation such as direction, phase, amplitude, frequency, or polarization state. This class also provides for nominal manufacturing methods for producing significant liquid crystal cell structure.


Class 137: Fluid Handling

Fluid material handling, and takes processes, systems, combinations, subcombinations and certain elements pertaining thereto not otherwise classified. Fluid materials include gas and liquids primarily, but the handling of other flowable materials, as fluent granular solids, is also found. Handling of fluent material by flow, as by confining, directing, causing and/or controlling the flow, and includes making the material available for flow or separating a smaller from a larger body of fluid material, as by tanks, containers, receivers, traps, etc., or pipes or conduits, with or without siphons, pumps, pressure or displacing fluids or other flow imparting means.

Subclass 15.01: Cleaning, repairing, or assembling