Tynax ~ Patent Library

Patent for Sale:

Printed Circuit Boards    

EMC reduction, impedance control of highspeed signals, board connectors solutions and assemblies, etc.


This Portfolio is forward referenced by the following companies: Nortel Networks Limited, Intel Corporation, Dell roducts L.P., Texas Instruments Incorporated, Arizona Digital, Inc., Canon Kabushiki Kaisha, Tyco Electronics AMP, K.K., International Business Machines Corporation, Rambus Inc., Litton Systems, Inc., Micron Technology, Inc., Winchester Electronics Corporation, Matsushita Electric Industrial Co., Ltd., BenQ Corporation, dspace digital signal processing and control engineering GmbH, Medtronic Physio-Control Manufacturing Corporation, Yamaichi Electronics Co., Ltd., High Connection Density, Inc., Amphenol Corporation

An exemplary patent is forward referenced 32 times and generally relates to a method of controlling the impedance of high speed signals on a printed circuit board. The high speed signal traces are placed on a two-sided printed circuit board such that impedance of the traces is controlled and so that the number of power and ground pins required on an integrated circuit are minimized

The seller would like to be granted a license back.

The seller may consider selling these patents individually.

Patent Summary

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

Class 174: Electricity: Conductors And Insulators

This class is for inventions relating to the structure of electrical conductors and insulators and insulators and the apparatus specialized to mounting, supporting, encasing in conduits, and/or housing the same. Conductors may be bare or be encased in insulation, may be single strand or plural strand, may be of single conductor form or there may be a plurality of conductors associated together to form a cable. Since all materials that have the property of being conductors of electricity and all devices made therefrom may be termed electrical conductors, only those structures that are specially designed to conduct electricity as their proximate purpose are placed in this class. Insulators are placed here when the structure thereof is claimed, which structure is specially designed for spacing two or more devices of different electrical potential from each other or for spacing one or more devices from ground. Since all materials which are poor conductors of electricity and devices made therefrom may be termed electrical insulators, only those structures whose proximate purpose is that already stated. Conduits are placed in this class only when some characteristic is claimed which limits the same to the electrical use.

Subclass 16.1: By ventilation or gas circulation
Subclass 16.3: With heat sink
Subclass 250: Preformed panel circuit arrangement (e.g., printed circuit)
Subclass 254: Convertible shape (e.g., flexible) or circuit (e.g., breadboard)
Subclass 261: With particular conductive connection (e.g., crossover)
Subclass 262: Feedthrough
Subclass 117FF: Conductor itself is flat

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.


Class 361: Electricity: Electrical Systems And Devices

Systems or devices which provide safety and protection for other systems and devices; control circuits for electromagnetic devices and non-electromagnetic-type relays. Systems or devices which discharge, or prevent the accumulation of electrical charge on or in an object or material; circuits for charging objects or materials. Systems for generating or conducting an electric charge. Systems which process electrical speed signals. Circuits for reversing the polarity of an electric circuit. Systems which cause the ignition of a fuel or an explosive charge. Systems and processes for demagnetizing a magnetic field. Transformers and inductors with integral switch, capacitor or lock. Electrostatic capacitors, per se. Housings and mounting assemblies with plural diverse electrical components. Electrolytic systems and devices.

Subclass 690: Air
Subclass 694: With air circulating means
Subclass 695: Fan or blower
Subclass 697: With heat sink or cooling fins
Subclass 704: Thermal conduction
Subclass 707: Through support means
Subclass 719: Circuit board mounted
Subclass 744: Cordwood type
Subclass 749: Flexible board
Subclass 752: With housing or chassis
Subclass 777: By specific pattern on board
Subclass 783: Having semiconductive device
Subclass 785: With separable connector or socket means
Subclass 790: Stacked
Subclass 794: Power, voltage, or current layer
Subclass 803: Interconnection details
Subclass 804: Spacer details
Subclass 809: With discrete structure or support

Class 439: Electrical Connectors

This is the generic class for a pair of mated conductors comprising at least two electrically conducting elements which are interconnected to permit relative motion of such conducting elements during use without a break in electrical conductivity therebetween. Also, this is the generic class for a device constituting an electricity conducting contact between conductors of electricity; wherein the joint is of a type which may be readily made and broken, repeatedly by attachment and detachment of contact supporting structure on each conductor.

Subclass 144: With connector retaining means in addition to contact of connector
Subclass 160: Including handle for direct manual urge to separate
Subclass 218: Coupling part
Subclass 36: Connection to lamp
Subclass 377: For guiding side of movable panel, e.g., circuit board
Subclass 513: Having spring biased contact
Subclass 61: Receives plural panel circuit edges
Subclass 65: With provision to conduct electricity from panel circuit to another panel circuit
Subclass 66: Conductor is compressible and to be sandwiched between panel circuits
Subclass 67: Flexible panel
Subclass 71: Leadless
Subclass 74: Overlying second preformed panel circuit, both adapted to be electrically connected
Subclass 75: Connected by transversely inserted pin
Subclass 91: Adapted to be sandwiched between preformed panel circuit arrangements
Subclass 96: Pliable conductor for making grounding connection of connector to container

Class 165: Heat Exchange

Apparatus or process not provided for in other classes for transferring heat, or apparatus or process not provided for in other classes relating to an auxiliary device particularly adapted to be used with such heat transfer apparatus.

Subclass 104.32: With pressurizing means or degassifying means
Subclass 122: Heating or cooling means and gas pump in housing
Subclass 80.3: Air cooled, including fins

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 718: Heat dissipating element held in place by clamping or spring means
Subclass 719: Pressed against semiconductor element
Subclass 721: With gas coolant
Subclass E23.044: For devices adapted for rectifying, amplifying, oscillating, or switching, capacitors, or resistors with at least one potential-jump barrier or surface barrier (EPO)
Subclass E23.086: Snap-on arrangements, e.g., clips (EPO)
Subclass E23.099: By flowing gases, e.g., air (EPO)

Class 454: Ventilation

This is the parent class for apparatus and processes for supplying air to and removing it from enclosures, for distributing and circulating the air therein, or for preventing its contamination.


Class 29: Metal Working

Metal working or shaping - it comprises processes, tools, machines, and apparatus not classifiable in the specific classes relating to the manufacture of articles from metal. It has been made the generic class for the following regardless of the composition of the blank, stock material, or article recited or worked upon: (a) process of electric condenser making; (b) a burnishing process; (c) a process of manufacture; (d) apparatus used to assemble or disassemble.

Subclass 832: Assembling to base an electrical component, e.g., capacitor, etc.
Subclass 837: By inserting component lead or terminal into base aperture
Subclass 839: Including metal fusion
Subclass 840: By metal fusion
Subclass 843: By metal fusion bonding
Subclass 850: By using wire as conductive path
Subclass 857: Assembling terminal to elongated conductor
Subclass 860: By metal fusion bonding
Subclass 739: Means to fasten electrical component to wiring board, base, or substrate
Subclass 741: Multilead component

Class 336: Inductor Devices

Inductor devices having capacitance or resistance; pattern controlled variable inductor devices and pattern tracing devices which actuate variable inductor devices; variable inductor devices operated by a condition sensitive means; electromagnets and permanent magnets; inductor device systems.

Subclass 200: Printed circuit-type coil
Subclass 234: Laminated type (includes bundles of rods or wires)