Patents Represented by Law Firm Barnes, Kisselle, Raisch, Choate, Whittemore & Hulbert
  • Patent number: 5799647
    Abstract: A window unit for an oven door having a pair of rectangular window panels held in spaced parallel relation by a frame. The frame is an endless rectangular member. The sides and ends of the frame are generally U-shaped in cross-section having spacer flanges engaging the inner faces of the panels to hold the panels spaced apart. Retainer flanges extend laterally outwardly from the spacer flanges over the edges of the panels. Clips are provided to clamp the panels to the frame.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: September 1, 1998
    Assignee: Mills Products, Inc.
    Inventor: Bob D. Mills
  • Patent number: 5802250
    Abstract: A method to eliminate noise in repeated sound start during a digital sound recording playback by using a slowly descending or ascending waveform to eliminate the discontinuity between sound waves which can be utilized in applications such as a playback only sound synthesis or a recording and playback system.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: September 1, 1998
    Assignee: United Microelectronics Corporation
    Inventor: Oliver C. K. Kao
  • Patent number: 5795651
    Abstract: The present invention relates to a nonwoven fabric including a fine denier filament having a plexifilamentary structure in which the disadvantages of polyolefins and of polyesters are offset each other while advantages of them are well utilized with a fine fibrillated structure comprising said filament. The filament comprises a mixture which is at least composed of polyolefin and polyester which are immiscible with each other and has a plexifilamentary structure. The filament is so highly fibrillated that the fibril has not been available yet and, in addition, the filament is with high strength and modulus and exhibits a good dyeing ability. The above-mentioned nonwoven fabric contains the filaments having a plexifilamentary structure in which a mixture of polyolefin and polyester which are immiscible with each other in a mixing ratio within a range of from 5/95 to 95/5 by weight and said filaments are entirely or partially bonded.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: August 18, 1998
    Assignee: Unitika, Ltd.
    Inventors: Fumio Matsuoka, Shigemitsu Murase, Koichi Nagaoka, Hiroshi Nishimura
  • Patent number: 5796101
    Abstract: A laser based tunable high resolution ESCA (Electron Spectroscopy for Chemical Analysis) system in which harmonics of a subpicosecond laser source are used to carry out core level photoemission is provided wherein photon energies tunable to 80 eV have been achieved and energies up to 150 eV or more are possible. The harmonic light is of extremely narrow bandwidth and spectrally bright which can be focussed by using reflective optics of gratings to an extremely small spot of well below one micron to permit high spatial resolution. When used in conjunction with appropriate electron objects, high resolution chemically sensitive mapping of device-size features is possible.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: August 18, 1998
    Assignee: IBM Corporation
    Inventors: Richard Allan Haight, Paul Fredrich Seidler
  • Patent number: 5793019
    Abstract: An infra-red and forced air oven for drying a freshly painted object. The drying oven has a plurality of heating elements, which radiate infra-red energy, disposed about the object to be dried. Each heating element preferably has an annular shell, an electrically conductive coil carried by the shell, and an air passage through the shell through which air is forced by a fan. Electricity is provided to the electrically conductive coil which becomes heated and thereby heats the shell and radiates heat and infra-red energy into the oven. The fan forces air through the air passage of the shell so that heated air flows to the interior of the oven. Thus, the oven provides both radiant energy and forced air to dry an object within the oven.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: August 11, 1998
    Assignee: DriQuik, Inc.
    Inventors: David Frederick Boyle, Thomas Alan Cherry, Gary Louis Solgere
  • Patent number: 5793140
    Abstract: A flat commutator for an electric motor of a vehicle fuel pump. The commutator is made with a one-piece carbon ring having a flat outer face, a one-piece conductor ring with a base portion embedded in the carbon ring and underlying outer face, and a housing of a plastic insulating material molded on the rear face of the carbon ring and adapted to mount the commutator on a motor armature. A plurality of circumferentially spaced apart grooves extend radially and axially completely through both the carbon ring and the conductor ring to provide a plurality of individual sintered carbon segments each with a separate conductor for electrically connecting the segments with armature coils.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: August 11, 1998
    Assignee: Walbro Corporation
    Inventor: J. D. Tuckey
  • Patent number: 5789876
    Abstract: The invention provides a novel laser-plasma-based source of relativistic electrons; and a method to use laser-driven plasma waves as the basis for the source of electrons. The technique involves a combination of laser beams, which are focused in a plasma. One beam creates a wakefield plasma wave. In one embodiment, the one beam creates a wakefield plasma wave and the other beam alters the trajectory of background electrons, such that they become trapped in the plasma wave and are then accelerated to relativistic velocities, preferably in a distance less than a millimeter. In another embodiment, the second beam removes electrons from atomic ions previously generated by the first beam thereby providing electrons which become trapped in the plasma wave and then accelerated to relativistic velocities.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: August 4, 1998
    Assignee: The Regents of the Univeristy of Michigan
    Inventors: Donald Umstadter, Joon-Koo Kim, Evan Dodd
  • Patent number: 5789527
    Abstract: Provided are a polyester resin for use in a toner binder which is excellent in terms of offset resistance and low-temperature fixability, which keeps triboelectric charge stability even in an environment of a high temperature and a high humidity, which has excellent durability, and which is used in a toner that gives vivid image characteristics, a process for producing the same, and a toner using the same. The polyester resin for use in the toner binder is formed by linking at least a part of the crosslinked low-molecular polyesters through a dicarboxylic acid used as a linking agent.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: August 4, 1998
    Assignees: Tomoegawa Paper Co., Ltd., Unitika, Ltd.
    Inventors: Kikumi Nakamichi, Kouta Tanahashi, Tomoko Kubota, Naomi Sasaki, Hideki Kurebayashi, Haruo Okutani, Kazue Nakadera
  • Patent number: 5789267
    Abstract: A method of forming a cell contact that has improved structural strength and break-down resistance and a cell contact produced by such method are provided. The method utilizes an oxide spacer consisting of a plurality of oxide layers deposited by two alternating methods of thermal CVD and plasma CVD. After a straight contact opening is first etched by a plasma etching technique, the hole is again etched by an etchant such as hydrogen fluoride which has a high selectivity toward oxide layers formed by the plasma CVD method and a low selectivity toward oxide layers formed by the thermal CVD method. As a result, a contact opening having a corrugated side-wall is formed and into which a polysilicon is deposited to substantially fill the hole. A cell contact having a corrugated side-wall configuration is thus formed which presents improved structural rigidity and break-down resistance.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: August 4, 1998
    Assignee: Mosel Vitelic, Inc.
    Inventors: Liang-Choo Hsia, Thomas Chang
  • Patent number: 5789270
    Abstract: A method of assembly an integrated circuit die to a heat sink by first providing a lead frame that has a die-attach paddle portion having a top surface, a bottom surface, and an opening therethrough, positioning a heat sink having a raised portion on its top surface abutting the bottom surface of the die-attach paddle portion, and then frictionally engaging the heat sink and the die-attach paddle together and bonding an integrated circuit chip to the top surface of the heat sink with an adhesive material sandwiched therein between such that the assembly can be placed in a mold apparatus for forming a plastic encapsulated package.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: August 4, 1998
    Assignee: Industrial Technology Research Institute
    Inventors: Jian Dih Jeng, Hsing Seng Wang
  • Patent number: 5787332
    Abstract: A process for treating composite materials comprising metals and having significant radioactivity for separation into concentrated individual products is provided. The process of the invention recovers valuable metals and semi-metal elements including rare earth, transition metal, radioactive elements, and compounds and composites thereof as commercially viable products while isolating the radioactive components. They key components in the composite material which are desired to be recovered are tantalum, niobium, and scandium due to their high commercial values and significant quantities. The process further includes the capability to recover uranium, thorium, rare earth, and zirconium products. Generally, the process consists of an initial sulfate roast followed by a series of hydrometallurgical unit operations designed to separate and purify the desired components into commercially usable products, such as tantalum and/or niobium in the form of metal oxides, M.sub.2 O.sub.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: July 28, 1998
    Assignee: Fansteel Inc.
    Inventors: William D. Black, David R. Tierney, Henrietta Notzl-Loiselle
  • Patent number: 5786284
    Abstract: The present invention relates to a nonwoven fabric including a fine denier filament having a plexifilamentary structure in which the disadvantages of polyolefins and of polyesters are offset each other while advantages of them are well utilized with a fine fibrillated structure comprising said filament. The filament comprises a mixture which is at least composed of polyolefin and polyester which are immiscible with each other and has a plexifilamentary structure. The filament is so highly fibrillated that the fibril has not been available yet and, in addition, the filament is with high strength and modulus and exhibits a good dyeing ability. The above-mentioned nonwoven fabric contains the filaments having a plexifilamentary structure in which a mixture of polyolefin and polyester which are immiscible with each other in a mixing ratio within a range of from 5/95 to 95/5 by weight and said filaments are entirely or partially bonded.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: July 28, 1998
    Assignee: Unitika, Ltd.
    Inventors: Fumio Matsuoka, Shigemitsu Murase, Koichi Nagaoka, Hiroshi Nishimura
  • Patent number: 5784475
    Abstract: A digital/analog sound synthesizing circuit comprises an RC oscillator outputting a system basic frequency, a timing generator converting the basic frequency into timing signals, a sound synthesizer producing sound numerical code data, and a digital/analog converter outputting an analog signal to drive a speaker. A voltage stabilizing circuit controls the RC oscillator and the digital/analog converter to eliminate sound frequency and volume instability.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: July 21, 1998
    Assignee: United Microelectronics Corporation
    Inventors: Chi-Mao Huang, Yu-chih Lin, Tsung-min Chen
  • Patent number: 5778671
    Abstract: An electrohydraulic control system that includes a bidirectional electric motor responsive to application of electrical power for rotation in either of two directions, and a hydraulic pump coupled to the motor and having ports for supplying hydraulic fluid in either of two flow directions as a function of direction of rotation of the electric motor. A hydraulic actuator is coupled to the pump for receiving fluid in either of two flow directions and performing work as a function thereof. An electronic controller applies electrical power to the electric motor so as to obtain a desired level of work at the actuator. The electronic controller includes one or more sensors operatively coupled to the actuator for applying electrical power to the motor as a function of motion at the actuator.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: July 14, 1998
    Assignee: Vickers, Inc.
    Inventors: James V. Bloomquist, Albin J. Niemiec
  • Patent number: 5777209
    Abstract: The present invention discloses a leakage detection apparatus for testing the vacuum tightness of a semiconductor processing equipment which is equipped with a universal adapter head for testing various components of the equipment and a method for conducting such tests. Valuable down time can be saved on the semiconductor fabrication equipment by pre-screening all components on the basis of vacuum tightness testing done by a leak detection chamber supplied with such universal adapter head before they are assembled into the fabrication equipment after a maintenance or cleaning procedure is conducted on the components.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: July 7, 1998
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Fu-Kang Tien
  • Patent number: 5776823
    Abstract: A multilayer structure having an oxygen or dopant diffusion barrier fabricated of an electrically conductive, thermally stable material of refractory metal-silicon-nitrogen which is resistant to oxidation, prevents out-diffusion of dopants from silicon and has a wide process window wherein the refractory metal is selected from Ta, W, Nb, V, Ti, Zr, Hf, Cr and Mo.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: July 7, 1998
    Assignee: IBM Corporation
    Inventors: Paul David Agnello, Cyril Cabral, Jr., Alfred Grill, Christopher Vincent Jahnes, Thomas John Licata, Ronnen Andrew Roy
  • Patent number: 5772831
    Abstract: A filter membrane element for a membrane separation unit for use in a water treatment apparatus or the like, and a method of manufacturing the same. An organic filter membrane including a plate-like support member made of nonwoven fabric and a film coating formed on both sides of the support member is joined with a surface of a filter plate, whereby the filter membrane element is formed. A portion of the film coating is dissolved to cause the support member to be exposed at that portion. Subsequently, the exposed portion of the support member is joined by adhesion or otherwise with a corresponding portion of the filter plate.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: June 30, 1998
    Assignee: Kubota Corporation
    Inventors: Masashi Moro, Kiyoshi Izumi
  • Patent number: 5772159
    Abstract: A conduit fitting for passage of a conduit through an opening in a mounting wall that includes a tubular body having an internal through-passage for receiving a conduit, an external axially oriented wall surface, and an external circumferential channel axially spaced from the external wall surface. A clip ring is received in the body channel, and has a radially outwardly oriented surface that axially tapers narrowingly away from the wall surface of the tubular body. A circumferential rib extends radially inwardly from the body of the clip ring to engage a bottom surface of the channel at the narrow end of the ring. When the body and ring are inserted through the mounting wall opening, the wide end of the ring is cammed radially inwardly about the rib into the channel on the tubular body, and then expands radially outwardly to capture the mounting wall between the ring and the axially oriented wall surface on the body.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: June 30, 1998
    Assignee: FKI Industries, Inc.
    Inventor: Robert O. Wendt
  • Patent number: D396144
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: July 21, 1998
    Assignee: Ajay Leisure Products, Inc.
    Inventor: Edmund L. Farmer
  • Patent number: D396653
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: August 4, 1998
    Assignee: Bulgari Time (Switzerland) S.A.
    Inventor: Paolo Bulgari