Patents Represented by Law Firm Falk, Vestal & Fish
-
Patent number: 5605759Abstract: A process for forming diamond like films of carbon on substrates at room temperature using physical vapour deposition. A source of carbon is physically ablated in the vicintity of a substrate to deposit on the substrate all forms of carbon. A physical discrimination process is applied continuously to remove graphite grains while leaving the aliphatic diamond form intact. The source of carbon is typically a high purity carbon rod. The substrate is typically metal or glass placed within about 60 centimeters where laser pulse energy of 50 millijoules peak power is used. Physical ablation is carried out by ion beam, arc or laser ablation. The resulting carbon plume impinges on the substrate and is thermally quenched. Physical discrimination between carbon forms is by using a laser having a wavelength which is absorbed by graphitic forms but which passes through the aliphatic forms without absorption thereby allowing thermal quenching of the diamond like aliphatic forms.Type: GrantFiled: October 12, 1994Date of Patent: February 25, 1997Inventors: Robert Prince, Elisa Bourdon
-
Patent number: 5589700Abstract: A semiconductor nonvolatile memory comprised of a p-type silicon substrate 3, an n.sup.+ drain 5 and an n.sup.+ source 9, the source and the drain regions defining an MOS channel region 7. On top of the channel region 7 there are laminated a silicon dioxide film 18 and a semiconductor rich oxide film 20 which has been nitrided so as to leave silicon nitride region therein. Further on top of these layers, there is formed a polysilicon film 22, which is etched to form a control electrode. By using the memory cell and appropriate select transistors, a semiconductor nonvolatile memory (EPROM) is constructed.Type: GrantFiled: February 28, 1994Date of Patent: December 31, 1996Assignee: Rohm Co., Ltd.Inventor: Hironobu Nakao
-
Patent number: 5583874Abstract: A portable tester for local area networks comprising a AUI circuit coupled to a media specific transceiver, a battery, a push-to-test switch and four light emitting diodes and an RJ45 jack for each of a personal computer and a network hub. When the push-to-test switch is pushed, power is applied to the media access unit and a link pulse is generated for coupling via a PC jack to a personal computer plugged into that jack. The link pulse is also coupled to any network hub plugged into a hub jack. The PC and network hub cannot both be simultaneously connected. If whichever unit is connected receives the link pulse and generates its own link pulse which is received by the tester, a link status LED is lit green. Otherwise, it is left dark. If the unit connected outputs a data packet in response to receipt of the link pulse, a receive data LED is lit green. Otherwise, it is left dark. If the link pulse is positive-going on the correct line, a polarity LED is lit green. Otherwise, it is left dark.Type: GrantFiled: December 7, 1994Date of Patent: December 10, 1996Assignee: Infonet Computer Systems, Inc.Inventors: Michael E. Smith, Jose J. Picazo, Jr.
-
Patent number: 5573656Abstract: A process for significantly decreasing the acid sludge settling time in waste oil recovery processes comprising the steps of heating used oil to a high temperature above 725 degrees Fahrenheit, cooling the heated oil, adding an oxidizing agent to the oil, allowing the acid sludge to settle within a period of approximately 24 to 72 hours, separating the acid-sludge-free oil from the acid sludge which settles out of solution as a result of addition of the oxidizing agent, and adding a polishing agent and separating the re-refined oil from the spent polishing agent. The spent polishing agent is recycled, and the acid sludge which settles out after oxidation is converted to either hard, oxidized asphalt or soft asphalt or asphalt products such as emulsions etc. The process produces a high quality re-refined oil rapidly and economically with no acid sludge disposal problem.Type: GrantFiled: February 16, 1994Date of Patent: November 12, 1996Inventor: Benjamin Santos
-
Patent number: 5570093Abstract: A police radar utilizing digital data transmission from the antenna unit to a separately housed counting and display unit. The antenna has a double balanced mixer to suppress even order harmonics. The counting and display unit has a computer programmed to perform digital signal processing on the digital data received from the antenna to improve the quality and accuracy of calculated speeds for patrol speed, strongest target speed and fastest target speed. Fastest target speed can be displayed simultaneously with strongest target speed. Signal processing techniques are used to suppress false signals caused by double and triple bounce, harmonics, intermodulation products, video display terminal interference, etc.Type: GrantFiled: February 10, 1995Date of Patent: October 29, 1996Assignee: Applied Concepts, Inc.Inventors: John L. Aker, Robert S. Gammenthaler, Alan B. Mead
-
Patent number: 5570059Abstract: A high speed switching technology suitable for implementing field programmable gate arrays using current mode logic in the high speed data path, and CMOS steering logic outside the high speed data path to enable the high speed switching logic and to implement multiplexer, selector and crossbar switch functions. High speed emitter follower logic compatible with the high speed switching logic for level shifting, buffering, and providing more current sink or source capacity is also disclosed.Type: GrantFiled: January 20, 1995Date of Patent: October 29, 1996Assignee: Dyna Logic CorporationInventors: Madhukar B. Vora, Burnell G. West
-
Patent number: 5565871Abstract: A police radar utilizing digital data transmission from the antenna unit to a separately housed counting and display unit. The antenna has a double balanced mixer to suppress even order harmonics. The counting and display unit has a computer programmed to perform digital signal processing on the digital data received from the antenna to improve the quality and accuracy of calculated speeds for patrol speed, strongest target speed and fastest target speed. Fastest target speed can be displayed simultaneously with strongest target speed. Signal processing techniques are used to suppress false signals caused by double and triple bounce, harmonics, ntermodulation products, video display terminal interference, etc.Type: GrantFiled: February 10, 1995Date of Patent: October 15, 1996Assignee: Applied Concepts Inc.Inventors: John L. Aker, Robert S. Gammenthaler, Alan B. Mead
-
Patent number: 5559905Abstract: In an apparatus for resizing an image, comprising interpolation filter means for receiving a stream of input pixels having a predetermined sampling period P and a first sampling rate of S pixels/lines, and interpolating the stream of input pixels at a predetermined interpolation rate for generating a first derived sample stream of pixels having a further sampling period (M/(CL))P and a second sampling rate of T pixels/lines, where L is a first positive integer greater than one, C is a positive integer and M is smaller than CL, and where either 2.sup.n M/CL or 2.sup.Type: GrantFiled: September 22, 1993Date of Patent: September 24, 1996Assignee: Genesis Microchip Inc.Inventors: Lance Greggain, Peter Mandl, Bruce Intihar
-
Patent number: 5557798Abstract: A communication interface for decoupling one software application from another software application such communications between applications are facilitated and applications may be developed in modularized fashion. The communication interface is comprised of two libraries of programs. One library manages self-describing forms which contain actual data to be exchanged as well as type information regarding data format and class definition that contain semantic information. Another library manages communications and includes a subject mapper to receive subscription requests regarding a particular subject and map them to particular communication disciplines and to particular services supplying this information. A number of communication disciplines also cooperate with the subject mapper or directly with client applications to manage communications with various other applications using the communication protocols used by those other applications.Type: GrantFiled: December 21, 1990Date of Patent: September 17, 1996Assignee: Tibco, Inc.Inventors: Marion D. Skeen, Mark Bowles
-
Patent number: 5552899Abstract: The invention disclosed relates to a facsimile transmission/reception method and apparatus using a common bus in an office automation system, and in detail to a facsimile transmission/reception method and apparatus using a single common bus for transmitting and receiving data and control signals to be interfaced with the outer devices.The apparatus comprises a decoding means 31 being applied with a scanning output data chip selection signal CS1 and a liquid crystal display chip selection signal CS2 for decoding a corresponding selection output signal, a selection output means 34,35 controlled by a first and second storage means 32 and 33 latching data, control signals and the like and the decoding means for selectively outputting the data latched by the first and the second storage means, and a common bus 37 for transmitting the data outputted by the selection output means to the operation panel unit 40.Type: GrantFiled: March 24, 1994Date of Patent: September 3, 1996Assignee: Hyundai Electronics, Ind Co. Ltd.Inventors: Seung H. Park, Jin S. Park, Jun M. Kim
-
Patent number: 5537590Abstract: This invention addresses the need to map information from databases and reports to a new dimension of structured, intelligent interpretations or diagnostics of that information, and then querying in a coordinated manner both the original information and the resultant diagnostics databases. The invention combines elements currently available in decision support tools, programming languages and expert system building tools. First, querying mechanisms for the information in reports and databases is provided. Second, both a test processing engine and an Expert System run a set of if-then-else tests and expert rules on said information, and the resulting coded diagnostics are stored in a diagnostics database.Type: GrantFiled: August 5, 1993Date of Patent: July 16, 1996Inventor: Armando Amado
-
Patent number: 5528245Abstract: A police radar utilizing digital data transmission from the antenna unit to a separately housed counting and display unit. The antenna has a double balanced mixer to suppress even order harmonics. The counting and display unit has a computer programmed to perform digital signal processing on the digital data received from the antenna to improve the quality and accuracy of calculated speeds for patrol speed, strongest target speed and fastest target speed. Fastest target speed can be displayed simultaneously with strongest target speed. Signal processing techniques are used to suppress false signals caused by double and triple bounce, harmonics, intermodulation products, video display terminal interference, etc.Type: GrantFiled: February 10, 1995Date of Patent: June 18, 1996Assignee: Applied Concepts, Inc.Inventors: John L. Aker, Robert S. Gammenthaler, Alan B. Mead
-
Patent number: 5525996Abstract: A police radar utilizing digital data transmission from the antenna unit to a separately housed counting and display unit. The antenna has a double balanced mixer to suppress even order harmonics. The counting and display unit has a computer programmed to perform digital signal processing on the digital data received from the antenna to improve the quality and accuracy of calculated speeds for patrol speed, strongest target speed and fastest target speed. Fastest target speed can be displayed simultaneously with strongest target speed. Signal processing techniques are used to suppress false signals caused by double and triple bounce, harmonics, intermodulation products, video display terminal interference, etc.Type: GrantFiled: February 10, 1995Date of Patent: June 11, 1996Assignee: Applied Concepts, Inc.Inventors: John L. Aker, Robert S. Gammenthaler, Alan B. Mead
-
Patent number: 5520381Abstract: An envelope feeder using a combination of frictional force differentiation and three discrimination edges, two of which are provided by flexible materials spaced apart from and on either side of a metal envelope separating plate to prevent multiple envelope feeds into printers. The flexible plate on the media side of the metal envelope separating plate is at a more acute angle to the vertical than the metal envelope separating plate, and the metal envelope separating plate of the invention is at a more acute angle than the angles used by metal envelope separating plates in the prior art. A third discrimination edge is provided by a flexible plate which is behind the metal envelope separating plate and which has an angled portion which is longer than the angled portion of the metal envelope separating plate so as to extend past the end of the angled portion of the metal envelope separating plate by about 0.15 inches.Type: GrantFiled: July 21, 1994Date of Patent: May 28, 1996Assignee: Genesis Technology, Inc.Inventors: Thomas Y. Lo, Dan D. Le, Buu Chau
-
Patent number: 5514272Abstract: A process for significantly decreasing the acid sludge settling time in waste oil recovery processes comprising the steps of heating used oil to a high temperature above 700 degrees Fahrenheit, cooling the heated oil, adding an oxidizing agent to the oil, allowing the acid sludge to settle within a period of approximately 24 to 72 hours, separating the acid-sludge-free oil from the acid sludge which settles out of solution as a result of addition of the oxidizing agent, and adding a polishing agent and separating the re-refined oil from the spent polishing agent. The process produces a high quality re-refined oil rapidly and economically.Type: GrantFiled: June 4, 1993Date of Patent: May 7, 1996Inventor: Benjamin S. Santos
-
Patent number: 5508661Abstract: A frequency synthesizer using a fixed oscillator driving a comb line generator to generate a spectrum of comb lines, one of which is selected by a switched array of fixed-tuned, YIG passband filters. The selected comb line is combined in a mixer with a signal from a local oscillator, which, preferably, is a direct digital synthesizer. The output of the mixer is fed to another switched array of fixed-tuned YIG passband filters where only the desired sideband is selected and the comb line and the other sideband is filtered out. In various alternative embodiments, tunable YIG filters are substituted for each array. Some embodiments also use a reverse slope equalizer to break up the coherent energy in the comb line spectrum at the output of the comb line generator to allow RF amplification to be applied without saturating the amplifier.Type: GrantFiled: November 29, 1994Date of Patent: April 16, 1996Assignee: Litton IndustriesInventors: William J. Keane, Christopher F. Schiebold
-
Patent number: 5474288Abstract: A control system for a host device sheet feeder that lengthens the life of the input feed roller of the host device by reducing drag on the sheet of paper being dragged into the host device by the feed roller thereof. Drag is reduced by sensing when a sheet of paper has been pushed far enough into the paper path to be close to engagement with the input feed roller of the host device. Then the control system pushes the sheet of paper a predetermined distance further until it engages with or is about to be engaged with the host device feed roller and starts being drawn into the host device. When the sheet of paper has travelled the predetermined distance, the control system drops a movable floor of the paper magazine of the sheet feeder sufficiently to take the top sheet of paper out of contact with the feed roller of the sheet feeder. This reduces or eliminates the drag associated with pinching of the top sheet of paper between the feed roller of the sheet feeder and the next sheet of paper down in the stack.Type: GrantFiled: July 21, 1994Date of Patent: December 12, 1995Inventors: Thomas Y.-C. Lo, Robert B. Gerstenberger
-
Patent number: 5474033Abstract: A device for amusing animals and teaching animals not to chew on undesirable objects such a furniture and clothing comprises a chewing device suspended from the neck of the animal. The animal will choose the suspended device to chew. The chewing device may be flavored. Medication may also be administered through the device.Type: GrantFiled: May 5, 1994Date of Patent: December 12, 1995Inventor: Robert K. Mitchell, Jr.
-
Patent number: 5470455Abstract: A process for converting the acid sludge produced by waste oil refineries into an intermediate sludge which can be used in the production of either soft, un-oxidized asphalt or hard, oxidized asphalt, and a process for converting the intermediate sludge into soft, un-oxidized asphalt. The process comprises contacting the entire surface area of acid sludge with a pH altering agent such as water or a solid base such as lime, caustic soda, or soda ash, to convert the acid sludge into a layer of liquid and a layer of intermediate sludge. Then the liquid layer is separated from the intermediate sludge layer, thereby producing an intermediate sludge having properties which make it suitable for use in asphalt production. To produce soft, un-oxidized asphalt, the intermediate sludge is heated to a temperature above the boiling point of water and held at that temperature long enough to remove all the aqueous components to create un-oxidized asphalt.Type: GrantFiled: February 17, 1994Date of Patent: November 28, 1995Inventor: Benjamin S. Santos
-
Patent number: 5453848Abstract: An image processing apparatus useful in, for example, FAX machines, for processing a binary or multiple level tone data in an image including a switch for selectively outputting either a binary level or the multiple level tone pattern in accordance with a selection signal the state of which is determined by the interline reading interval times while scanning the image on an original document.Type: GrantFiled: March 25, 1994Date of Patent: September 26, 1995Assignee: Hyundai Electronics IndustriesInventors: Seung H. Park, Jin S. Park, Jun M. Kim