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| Number | Title | Issue Date |
| 6271954 | Waveguide absorption modulator with integral optical isolator Methods and apparatus for isolating a modulation region of an external modulator that has a semiconductor waveguide structure that comprises at least one integral isolation region.... | 08/07/2001 |
| 6233335 | Battery switching subscriber loop interface circuit A subscriber loop interface circuit is provided that includes a current directing element for directing current from the output stage of line interface amplifiers. The current is directed to a secondary power supply having a magnitude lower than the conve... | 05/15/2001 |
| 6218961 | Method and system for proximity detection and location determination A system and method for preventing collisions between vehicles, such as railway vehicles, by exchanging data regarding track position of the vehicles. By use of an on-board track database, the system provides an indication of the distance between vehicles... | 04/17/2001 |
| 6185255 | System and Method for exciting advanced television signals An exciter for advanced television signals such as a digital television signal. The exciter corrects for instabilities in the television signal provided to it so as to produce a signal with tightly controlled frequency and reduced co-channel interference.... | 02/06/2001 |
| 6167131 | Ring generator In a local loop telephone system, a voltage limited device having circuitry to provide subscriber interface functions and generate a ring signal. The device comprises four switches in a full bridge drive configuration. An external source provides a consta... | 12/26/2000 |
| 6167552 | Apparatus for convolutional self-doubly orthogonal encoding and decoding An encoder and decoder for generating and decoding convolutional codes of improved orthogonality. In an exemplary embodiment the encoder includes a K-bit length shift register for receiving an input serial stream of information bits and providing for each... | 12/26/2000 |
| 6159274 | Coloring mechanism and a recording material with the mechanism The present invention provides a coloring mechanism in which hidden letters (including numbers), figures, symbols, images etc. appear by rubbing the surface with metal such as coins etc., and to a recording material provided with this mechanism. In the co... | 12/12/2000 |
| 6159663 | Method of creating a solderable metal layer on glass or ceramic A method for creating a solderable metal layer on a ceramic, glass, or glass ceramic member is described. The described method deposits an aluminum containing mixture on the member by ion vapor deposition creating a metalized ceramic member. A photoresist... | 12/12/2000 |
| 6158389 | Sprint training exercise system and method This invention is a sprint exercise training system and method suitable for a variety of animals, including horses, dogs and humans, to apply a restraining force during training to condition an animal to run faster. An exercise path (19) is defined by a s... | 12/12/2000 |
| 6157076 | Hermetic thin pack semiconductor device A hermetic thin pack semiconductor device. The semiconductor device has a semiconductor substrate and at least one electrode on the upper surface of the semiconductor substrate. A lid of a ceramic material for the semiconductor device has at least one ope... | 12/05/2000 |
| 6153310 | Ink jet recording sheet An ink jet recording sheet is disclosed which has excellent ink retention properties, color development properties, weather resistance and water resistance, and which is substantially free from curling even if it has its only one side provided with an ink... | 11/28/2000 |
| 6151339 | Thermal compensation of injection laser diodes driven by shunt current modulators A laser driver for an injection laser diode (ILD) protects the ILD during ILD temperature changes so that the ILD is not subjected to a potentially harmful operating current. The ILD may be operated near it maximum limit and modulated by decreasing the av... | 11/21/2000 |
| 6148506 | Insertion/extraction tool for printed circuit board The invention relates to an insertion/extraction tool for inserting and extracting printed circuit boards from a card cage. The invention uses fewer parts than the prior art and reduces bending stress on the printed circuit board by simultaneously applyin... | 11/21/2000 |
| 6146397 | Endarterectomy loop An endarterectomy instrument and method for the treatment of alterosclerosis including a loop and a handle formed from a single strand of wire, the wire of the handle being twisted together to increase the rigidity thereof, but being sufficiently flexible... | 11/14/2000 |
| 6144731 | Distributed telephony management Apparatus and method for achieving distributed telephony management within a network of telecommunication switches are disclosed. By using techniques known to computer communication technology but as yet unapplied to telephony, execution of tasks necessar... | 11/07/2000 |
| 6139023 | Seal for movable structural components A seal for movable structural components, like piston rods or shafts, includes a carrier body made of thermoplastic material and a sealing member locked to said carrier body and made of polytetrafluoroethylene (PTFE) material. A form-lock connection is ac... | 10/31/2000 |
| 6137189 | Line circuit apparatus for supplying power to a telephone set in telecommunication systems A subscriber line interface circuit ("SLIC") for a telecommunications device powered from a single power source and using a voltage regulator to limit the voltage across the terminals of the telecommunications device to a predetermined value below the ind... | 10/24/2000 |
| 6128991 | Punch and die device for working pipe A punch and die device for working such as punching of a pipe material is disclosed, of which internal die means can easily be inserted into a pipe material even if an open end of the pipe material to be worked has burrs inward extending therefrom, and in... | 10/10/2000 |
| 6130823 | Stackable ball grid array module and method A stackable ball grid array module in which a chip select decoder is used to reduce the number of busses required for communication between modules. Additional modules may be added without requiring additional interconnect lines in the array. Cooling of t... | 10/10/2000 |
| 6121105 | Inverted thin film resistor and method of manufacture An integrated circuit inverted thin film resistor structure and method of manufacture having interconnect defining resistor contacts and leads resident within and coplanar with a supporting layer, resistive material uniformly overlaying the supporting lay... | 09/19/2000 |
| 6115162 | Double side band, carrier suppressed modulated coherent fiber optic link A system for conveying a signal by optical fiber may include a converter for converting a radio frequency signal to an optical frequency signal, the converter having an interferometer modulator for providing a carrier suppressed optical frequency signal h... | 09/05/2000 |
| 6114896 | Complementary multiplexer with low disabled-output capacitance, and method A complementary multiplexer with low disabled output capacitance and method in which a plurality of switched buffers are packaged together to avoid the capacitance of a plurality of switched buffers applied to the printed-circuit board transmission lines.... | 09/05/2000 |
| 6110799 | Trench contact process A trench process for establishing a contact for a semiconductor device with trenches such as the trench and planar MOSFETs (UMOS), trench and planar IGBTs and trench MCTs which reduces the number of masks and eliminates the need for lateral diffusion into... | 08/29/2000 |
| 6110763 | One mask, power semiconductor device fabrication process A method of fabricating a MOS controlled thyristor (MCT) semiconductor power device which reduces process time, reduces cell size, and increases the density of turn-off channels. The method uses a single, dopant-opaque mask to form MCT structure above the... | 08/29/2000 |
| 6110154 | Valve and valved trocar jacket tube A valve and and a valved trocar jacket tube by which there is no need of an adapter, types of a clamp or the like to be used are not limited, and leakage of an inert gas from an abdominal cavity can be prevented. In the valve and the valved trocar jacket ... | 08/29/2000 |
| 6107872 | Adaptive control of RF power amplifier power supply voltage The power supply voltage is adaptively controlled to increase the efficiency and minimize multi-tone intermodulation distortion of a power amplifier either as a function of amplifier overdrive and/or as a function of the frequency of the input waveform. I... | 08/22/2000 |
| 6108421 | Method and apparatus for data encryption A method and apparatus for use in encrypting and decrypting digital communications converting an initial block to final block based on freely selectable control information and secret key information. The apparatus or method having a plurality of units or... | 08/22/2000 |
| 6108352 | Circuit and method for synchronizing outputs of two simultaneously transmitting devices in a multiplexed communication system A circuit and method for synchronizing multiple transmitting devices in a multiplexed communication system in which transmitting nodes generate bit transitions on the multiplexed bus based on the time elapsed since the last received bit transition, and in... | 08/22/2000 |
| 6104180 | Transformers of voltage meters based on mechanical waves Transformers of electric voltage meters based on mechanical waves. The invention is based on the generation of elastic waves in transformers which are composed of a transmitter, a receiver, a dielectric body and a mechanical connection, whereby the transm... | 08/15/2000 |
| 6098384 | Breakaway horse rein A safety insert for a horse rein which separates under a predetermined tension to open the rein and reduce the risk to the rider without damage to the rein.... | 08/08/2000 |
| 6097704 | System for communicating digital information between a base unit and plural mobile units In a wireless communication system in which a base station communicates with plural mobile stations using frames of digital data, each frame having a control slot and plural voice (or data) slots, the present invention divides at least some of the slots i... | 08/01/2000 |
| 6091765 | Reconfigurable radio system architecture A system and method for providing a digital field configurable radio frequency communication system that can be configured into a transmitter, or a receiver, to function with a plurality of signaling schemes, such as, AM, AME, A3E, H3E, J3E, CW, SSB, M-PS... | 07/18/2000 |
| 6089071 | Method for controlling press working by means of working wheels A method for controlling press working by means of working wheels is disclosed which is capable of solving problems in conventional punch press working by means of working wheels. The method comprises: in punch press working by means of working wheels, mo... | 07/18/2000 |
| 6082884 | Adjustable fiber optic lighting fixture for individually adjusting the color, focal length and aim of the produced light and method A fiber optic track lighting fixture and method with independent focusing and aiming of the individual light beams therefrom. The fixture comprises subassemblies easily assembled to form the fixture.... | 07/04/2000 |
| 6081009 | High voltage mosfet structure A high voltage MOSFET with low on-resistance and a method of lowering the on-resistance for a specific device breakdown voltage of a high voltage MOSFET. The MOSFET includes a blocking layer of a first conductivity type having vertical sections of a secon... | 06/27/2000 |
| 6079715 | Rotary shaft seal having a PTFE seal lip and a method and apparatus of manufacturing same A rotary shaft seal having an elastomer seat for fitting into the bore of a hub or for the attachment onto a shaft comprises a seal washer, connected to a metal enforcement ring through a elastomer intermediate layer. The elastomer intermediate layer cons... | 06/27/2000 |
| 6074601 | Quench hardening jig for a cylindrical work piece A quench hardening jig for a cylindrical work piece comprises a flat shaped base member(1), a plurality of taper plates(2) and an inversely tapered block(4), the plurality of the taper plates being disposed radiantly on the base member retractably relativ... | 06/13/2000 |
| 6073414 | Light gauge metal truss system A light gauge metal truss system including trusses contructed of roll formed truss chord and truss web members and a two piece roll formed truss anchor for anchoring the truss to a wall. The truss chord members are roll formed to have a generally U-shaped... | 06/13/2000 |
| 6075214 | Push button assembly for a vending machine A push button for a vending machine. The push button includes a lens that is depressed by the customer. Under the lens is a transparent or semi-transparent flexible cover over a plurality of light emitting diodes (LEDs). The color and arrangement of the L... | 06/13/2000 |
| 6072286 | Auxiliary lighting control circuit and method for a HID lamp lighting system An auxiliary lighting control circuit and method for a lighting system having a HID lamp as the primary light source and an auxiliary light source for providing light when the HID lamp is extinguished or below full brightness but power remains available t... | 06/06/2000 |
