Patents Represented by Attorney, Agent or Law Firm Weingarten, Schurgin, Gagnebin & Hayes
  • Patent number: 6195333
    Abstract: Flow shaping is executed at each ATM device in a virtual circuit formed in an ATM network. More particularly, the flow of data units through the virtual circuit is controlled at each ATM switch such that the variable transmission delay remains substantially constant from hop to hop. Flow shaping at each device causes variable transmission delay to remain substantially constant throughout the virtual circuit, thereby allowing formation of an ATM virtual circuit having an arbitrarily large number of ATM switch “hops” without constraints imposed by required playout buffer size. Further, the invention minimizes end-to-end delay.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: February 27, 2001
    Assignees: Fujitsu Network Communications, Inc., Fujitsu Limited
    Inventor: Jeffrey L. Wise
  • Patent number: 6192046
    Abstract: The present invention is directed to an apparatus and method for efficiently transferring asynchronous transfer mode (ATM) cells across a backplane in a network switch. The present invention is realized through an electrical apparatus that converts parallel data that is received on parallel data input ports to serial data that is transmitted on serial data output ports. The parallel data that is received on each parallel data input port is divided and transmitted from a corresponding pair of serial data output ports. The electrical apparatus also converts serial data that is received on serial data input ports to parallel data that is transmitted on parallel data output ports. The serial data that is received on a corresponding pair of serial data input ports is combined and transmitted from a parallel data output port.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: February 20, 2001
    Assignee: Ascend Communications, Inc.
    Inventors: Mahesh N. Ganmukhi, Patrick L. DeAngelis, Siu Wing Li
  • Patent number: 6192051
    Abstract: Network routing apparatus employs multi-level tree data structures in a centralized routing table and in distributed forwarding tables. Each level of each structure is associated with a different field of a network address appearing in received packets. Pointers in each structure are used to identify either an address of a next hop network, or a next-level tree to be examined for a next-hop address. An uncompressed tree routing table uses directly addressed trees in order to simplify the storage and retrieval of pointers, and the next-tree pointers directly identify next trees. Compressed tree forwarding tables are generated from the uncompressed routing table by reducing the number of pointers stored at one or more levels to substantially the number of unique next hop addresses associated with network addresses at that level. A single mapping table maps pointer values at one level to the locations of trees at the next level in the compressed trees.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: February 20, 2001
    Assignee: Redstone Communications, Inc.
    Inventors: Michael E. Lipman, Russell L. Heyda
  • Patent number: 6187710
    Abstract: Synthetic clay minerals are made up of elementary three-layer platelets consisting of a central layer of octahedrally oxygen-surrounded metal ions (octahedron layer), which layer is surrounded by two tetrahedrally surrounded, silicon atom-containing layers (tetrahedron layers), a number of such elementary platelets being optionally stacked. The dimensions of the clay platelets vary from 0.01 &mgr;m to 1 &mgr;m, the number of the stacked elementary three-layer platelets varies from on average one platelet to twenty platelets, while in the octahedron layer at most 30 at. % of the metal ions has been replaced by ions of a lower valency and in the tetrahedron layers at most 15 at. % of the silicon ions has been replaced by ions of a lower valency, such a replacement having taken place in at least one of these layers and these layers having a deficiency of positive charge because of the replacement.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: February 13, 2001
    Inventors: Roland Jacobus Martinus Josephus Vogels, John Wilhelm Geus
  • Patent number: 6188329
    Abstract: A system and method for integrating traffic light violation related vehicle information with court date scheduling information, which employs one or more digitized video recordings of alleged violations. The system provides end-to-end violation processing using the digitized video recordings of the event, and using vehicle database information, as may for example be provided from a department of motor vehicles (DMV) database. The system potentially also interfaces to a court date scheduling database, which includes indications of various available times at which hearings regarding traffic violations may be scheduled. A user interface may provide a display of one or more perspectives on the violation event, as well as access to the vehicle and court date scheduling database.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: February 13, 2001
    Assignee: Nestor, Inc.
    Inventors: Michael T. Glier, Mark D. Laird, Michael T. Tinnemeier, Steven I. Small, Randall T. Sybel, Steven S. Hsieh, Greg D. Johnson, Lalitha R. Coimbatore
  • Patent number: 6186274
    Abstract: A motorized safety system which protects the open side of a mezzanine, loading dock or other elevated work area when in use. The safety system is easy to use while requiring only minimal floor space. The safety system comprises two posts, each post having a motor mounted on the top of the post, a control unit for controlling and sychronizing motor operation mounted on the side of one post, a movable arm having a safety net and associated hardware such that when the safety system is in a first position the opening of the mezzanine or loading dock is substantially covered by the net. When the safety system is in a second position, the arm and net are out of the way, allowing access by workers and machinery to and from the open side. The operation of the safety system from the first position to the second position or vice versa is performed remotely using a wireless hand held device that transmits instructions to the control unit, thus further reducing the risk of falling.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: February 13, 2001
    Assignee: Bay Nets, Inc.
    Inventors: Charles Gregory Reynolds, William G. Kiniry
  • Patent number: 6187229
    Abstract: An injection molding process wherein the times of heating to melt a resin are reduced to minimize the thermal hysteresis and to decrease the deterioration of physical properties caused by the thermal hysteresis, so that high quality information recording disks may be produced. A molding process wherein the plasticating and the injection and filling of a material resin are carried out in separate cylinders, allows constant molding for a long period of time. A material resin such as polycarbonate is supplied without predrying to an injection apparatus for a first time molding. Resin is kneaded by the apparatus while volatile components are heated to be vaporized and exhausted through a vent port. An inert gas atmosphere is provided within the cylinder to prevent the material resin from being oxidized. Since predrying can be dispensed with, the thermal hysteresis will be extremely small and the deterioration of the resin caused by such heating may be suppressed.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: February 13, 2001
    Assignee: Nissei Plastic Industrial Co., Ltd.
    Inventors: Kazutoshi Takayama, Kiyoto Takizawa
  • Patent number: 6188771
    Abstract: A personal sound masking system for use in an individual workspace provides an optimized acoustic background environment by delivering a sound masking signal that is specifically matched to the individual user's location and physical relationship to other nearby offices. The sound masking system employs multiple loudspeakers and multiple mutually incoherent channels in order to obtain a desired degree of diffuseness. A control module includes an erasable programmable read-only memory (EPROM) that stores data representing a number of samples of a masking signal segment, addressing logic that accesses the samples in the memory sequentially and repetitively to generate different series of data values each representing a different masking signal, digital to analog converters that convert the series of samples into analog masking signals, and power amplification circuitry that amplifies the analog masking signals to levels suitable for driving the loudspeakers.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: February 13, 2001
    Assignee: Acentech, Inc.
    Inventor: Thomas R. Horrall
  • Patent number: 6185552
    Abstract: A distributed data structure providing an indication of the validity of a data value or values associated with a given key value. The data structure has at least one data entry associated with each of plural key entries. The validity indication enables asynchronous updates to key and data entries by preventing retrieval of invalid data values, while enabling a simultaneous search of the key entries for a particular key value. The validity indication also allows the data structure to be sparsely populated; it is possible to mark a key value as invalid such that binary searching of the data structure is unaffected and invalid data is not retrieved. Data structure throughput is enhanced as a result of minimized maintenance overhead.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: February 6, 2001
    Assignee: 3Com Corporation
    Inventors: Kenneth J. DeLong, Edward A. Heiner, Jr.
  • Patent number: 6183583
    Abstract: A three-dimensional fiber structure is formed by superposing layers of felt and by bonding them together by needling, then the structure is compressed to obtain a preform having a fiber volume fraction of not less than 20%. The preform is held in its compressed state by being impregnated with a liquid composition containing a bonding agent capable of bonding the fibers of the preform together. Thereafter, the preform consolidated in this way is densified, e.g. by chemical vapor infiltration.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: February 6, 2001
    Assignee: Messier-Bugatti
    Inventors: Renaud Duval, Eric Lherm
  • Patent number: 6185214
    Abstract: A Receive Frame Processor (RFP) in a network bridge/router for receiving frame-characterizing information from other elements of the bridge/router and for generating plural code vectors which result in the selective processing of a received frame in software and/or hardware is provided. The received information is utilized in constructing code vectors representative of how a received frame is to be processed. Further data structures stored in conjunction with the RFP are indexed by the constructed code vectors and indicate whether the frame is to be processed in the RFP hardware, by software in an associated Frame Processor, or both. These data structures also indicate whether the port through which the frame was received is to be blocked to prevent misordering of received frames. If the frame is to be processed in software, the RFP generates a Receive Vector which is provided to the FP and which conveys the frame-characterizing code vectors to the FP.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: February 6, 2001
    Assignee: 3Com Corporation
    Inventors: Leonard Schwartz, John A. Flanders, William D. Townsend, David C. Ready
  • Patent number: 6185344
    Abstract: The optical device for detecting in situ traces of gaseous hydrogen in an environment at cryogenic temperature, using a sensor having a fine film of palladium whose optical properties vary as a function of the concentration of hydrogen in contact with the film comprises, a palladium micromirror deposited in the form of a film at a first end of a first optical fiber, a first light source emitting a light signal at a predetermined wavelength into a second end of the first optical fiber, and means for detecting the light signal as modified after passing in contact with the palladium micromirror disposed in the environment at cryogenic temperature, processor circuits for responding to variation in the intensity of the light signal contacting the palladium micromirror to determine hydrogen concentration, and means for localized heating of the palladium micromirror, by light radiation so as to keep the palladium of the micromirror in its &agr; phase.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: February 6, 2001
    Assignee: Societe National d'Etude de Construction de Moteurs D'Aviation-S.N.E.C.M.A.
    Inventors: Xavier Bevenot, Michel Clement, Henri Gagnaire
  • Patent number: 6180339
    Abstract: Nucleic acid probes and primers are described for detecting fungi that cause disease in humans and animals, as well as spoilage of food and beverages. These probes can detect rRNA, rDNA or polymerase chain reaction products from a majority of fungi in clinical, environmental or food samples. Nucleic acid hybridization assay probes specific for Acremonium sp., Aspergillus clavatus, Aspergillus flavus, Aspergillus fumigatus, Aspergillus glaucus, Aspergillus nidulans, Aspergillus niger, Aspergillus ochraceus, Aspergillus terreus, Aspergillus unguis, Aspergillus ustus, Beauveria sp., Bipolaris sp., Blastoschizomyces sp., Blastomyces dermatitidis, Candida albicans, Candida glabrata, Candida guilliermondii, Candida kefyr, Candida krusei, Candida lusitaniae, Candida parapsilosis, Candida tropicalis, Chrysosporium sp., Cladosporium sp., Coccidioides immitis, Cryptococcus neoformans var gattii serotype B, Cryptococcus neoformans serotype A, Cryptococcus laurentii, Cryptococcus terreus, Curvularia sp., Fusarium sp.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: January 30, 2001
    Assignee: Bayer Corporation
    Inventors: Gurpreet S. Sandhu, Bruce C. Kline
  • Patent number: 6179158
    Abstract: A wide mouthed container of synthetic resins for a paint, wax and the like, formed thinly in the body portion thereof by injection stretch blow molding is provided. A mouth portion of the wide mouthed container is of large diameter and comprises an internal wall integral with a body portion having a bottom, a belt shaped external wall integrally formed on the outside of the internal wall via a joint portion of required width to be in H-shape, and an upper and lower annular grooves between both the walls sectioned by the joint portion. The body portion is stretch blow molded thinly from the underside of the internal wall to a position where the lower edge of the external wall touches the body portion to form the side surface of the body portion on the same level as said external wall and to form the lower annular groove into a hollow in the lower part of the mouth portion.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: January 30, 2001
    Assignee: A. K. Technical Laboratory, Inc.
    Inventor: Hideaki Koda
  • Patent number: 6180221
    Abstract: An electrically conductive elastomer for grafting to thermoplastic and thermoset substrates is disclosed. If the substrate is a thermoset substrate, the electrically conductive elastomer comprises a mixture of an elastic material, a quantity of electrically conductive flakes, a thermoplastic elastomer material, and a thermoset material. If the substrate is a thermoplastic substrate, the electrically conductive elastomer comprises a mixture of an elastic material, a quantity of electrically conductive flakes, a thermoplastic elastomer material, and a thermoplastic material. The electrically conductive elastomer may further comprise a quantity of electrically conductive particles interspersed within the mixture. Alternatively, a quantity of electrically conductive particles may be imbedded in an outer surface of the electrically conductive elastomer. The electrically conductive elastomer is typically grafted to the substrate by a thermal process.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: January 30, 2001
    Assignee: Thomas & Betts International, Inc.
    Inventors: David R. Crotzer, Mark G. Hanrahan, Neill N. Silva
  • Patent number: 6181142
    Abstract: A nonlinear current mirror for loop-gain control incorporates a resistor in one section of a current mirror which produces a nonlinear transfer function for the current mirror. When the nonlinear current mirror is included as part of a capacitive displacement gauge the gain of the gauge varies as a function of the input to the current mirror which compensates for the change in gain caused by the probe capacitance. Accordingly, the distance range and/or frequency response of the capacitive displacement gauge is increased.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: January 30, 2001
    Assignee: ADE Corporation
    Inventor: Roy E. Mallory
  • Patent number: 6174290
    Abstract: An ovulation period detecting apparatus for mammals is provided comprising: a bar-shaped detecting unit to be inserted in the vagina of a mammal; electrodes arranged on the bar-shaped detecting unit so as to be in contact with the vaginal mucous membrane when the bar-shaped detecting unit is inserted in the vagina of the mammal; pressure detecting means for detecting a pressure at which the electrodes are pressed against the vagina of the mammal; impedance detecting means for applying a voltage across the electrodes and detecting the value of impedance between the electrodes when the pressure detecting means detect a pressure equal to or greater than a prescribed pressure over a prescribed time; and data outputting means for outputting the value of the impedance detected by the impedance detecting means.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: January 16, 2001
    Assignee: Leader Technics Co., Ltd.
    Inventor: Yukisato Cho
  • Patent number: 6175112
    Abstract: A universal interface for continuous on-line liquid sample introduction directly to the time-of-flight mass spectrometer, which can further promote throughput and utility of MALDI-TOF MS, is disclosed. Preferably, the liquid sample includes a matrix, either solid or liquid, for use in matrix-assisted-laser-desorption-ionization, most particularly in a time-of-flight mass spectrometer which can further promote throughput and utility of MALDI-TOF MS. In the method of the invention, the same samples and matrices, both solid and liquid, can be used as in conventional MALDI. In practice of the method of the invention, a solution of sample containing, e.g., peptide and matrix is infused directly into the source chamber of a mass spectrometer at subatmospheric pressure, deposited on a moving sample holder, such as a rotating quartz wheel, and desorbed by, e.g., a nitrogen laser. The method of the invention is particularly amenable to multiplexing, the parallel deposition of multiple samples, e.g.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: January 16, 2001
    Assignee: Northeastern University
    Inventors: Barry L. Karger, Frantisek Foret, Jan Preisler
  • Patent number: 6175142
    Abstract: A PIN photodiode comprising a P-type layer, an N-type layer, and an I-type layer provided between said, P-type layer and said N-type layer, wherein a junction surface between said I-type layer and said N-type layer is formed by joining a high specific resistance wafer preformed as said I-type layer to a high concentration N-type wafer preformed as said N-type layer. The thickness of said high specific resistance wafer has been adjusted in accordance with the peak value of the wavelength of light rays to be accepted. Therefore, N+ carriers do not exist in the I-type layer and the thickness of the I-type layer can be freely defined, causing the frequency characteristic and the wavelength sensitivity characteristic to be satisfying.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: January 16, 2001
    Assignee: Stanley Electric Co., Ltd.
    Inventor: Toshihiro Ehara
  • Patent number: D437887
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: February 20, 2001
    Assignee: Porsche Design Produkte Vertriebsgesellschaft mbH
    Inventor: Ferdinand Alexander Porsche