Patents Represented by Attorney Armstrong, Westerman & Hattori, LLP
  • Patent number: 6661022
    Abstract: An information processing structure is disclosed that is formed of single electron circuits each operating rapidly and stably by way of a single electron operation. The information processing structure includes a MOSFET (11), and a plurality of quantum dots (13) disposed immediately above a gate electrode (12) of the MOSFET and each of which is made of a microconductor or microsemiconductor of a nanometer scale in size. Between each of the quantum dots and the gate electrode is there formed an energy barrier that an electron is capable of directly tunneling. The total number of such electrons moved between the quantum dots and the gate electrode is used to represent information. In the structure, a power source electrode (14) is disposed in contact with the quantum dots and a pair of information electrodes (15) is disposed across a quantum dot in contact therewith for having electric potentials applied thereto, representing data of information.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: December 9, 2003
    Assignee: Japan Science and Technology Corporation
    Inventors: Takashi Morie, Atsushi Iwata, Makoto Nagata, Toshio Yamanaka, Tomohiro Matsuura
  • Patent number: 6662121
    Abstract: When a micro-heater heats fluid using an external driving current, an upstream thermopile 8 detects the temperature of the fluid before it is heated to produce a first temperature detected signal and a downstream thermopile 9 detects the temperature of the fluid before it is heated to produce a second temperature detected signal. The flow rate is computed based on the difference signal between both detected signals. A right thermopile 11 and a left thermopile 13, which are arranged in a direction orthogonal to the flow direction of the fluid, detect the temperature of the fluid to produce a right temperature detected signal and a left temperature detected signal. The property of the fluid is computed on these right and left temperature detected signals. The flow rate is corrected on the basis of the property thus computed. The flow rate of an object fluid for measurement can be accurately measured by a flow sensor whose output characteristic varies when the kind or composition of the fluid changes.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: December 9, 2003
    Assignee: Yazaki Corporation
    Inventors: Seiji Oda, Michiaki Yamaura
  • Patent number: 6659751
    Abstract: A polymer substrate for radiation-induced graft polymerization in the form of a woven or non-woven fabric that comprises a woven or non-woven fabric composed of polymer fiber and a reinforcement polymer having a greater strength and a slower rate of radiation-induced graft polymerization than said polymer fiber. Also, radiation graft treated stock prepared from said polymer substrate. In another aspect, a radiation graft treated material in the form of a woven or non-woven fabric material that is composed of polymer monofilament fiber of which only the surface has undergone a radiation-induced graft polymerization but of which the center remains unaffected by grafting.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: December 9, 2003
    Assignee: Ebara Corporation
    Inventors: Takanobu Sugo, Kunio Fujiwara, Hideo Kawazu, Teruo Masubuchi, Junichi Kanno, Naotoshi Endo, Masaji Akahori
  • Patent number: 6661198
    Abstract: The invention provides a charging rate adjusting circuit for a cell combination 1 comprising cell modules 11 each comprising one or a plurality of cells and connected in series and adapted to uniformize the cell modules 11 in charging rate. The adjusting circuit comprises a pair of discharge lines 12, 13 extending from opposite electrodes of each cell module 11, a discharge resistor 2 and an on-off switch 3 provided between the discharge lines 12, 13, a timer circuit 4 comprising a CR circuit for feeding a control signal to a gate of the on-off switch 3, and a photocoupler 5 for initiating the circuit 4 into operation in response to a discharge command.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: December 9, 2003
    Assignee: Sanyo Electric Co., LTD
    Inventor: Kimihiko Furukawa
  • Patent number: 6662073
    Abstract: A machining simulation is performed on a graphic data basis prior to machining. Machining simulation means (17) simulates a forced-vibration frequency and/or a load variation frequency occurring due to interrupted cutting on the basis of machining information, and numerical control command generating means (18) generates a numerical control command on the basis of the frequencies obtained from the machining simulation means (17). A spindle rotation speed can be reflected on the actual machining and the generation of a machining program under conditions optimum for the actual machining. Therefore, the interrupted-cutting forced-vibration frequency and/or load variation frequency, or harmonic frequencies thereof which are integral multiples thereof are prevented from being close to the natural frequency of a machine, a tool, a jig or a workpiece. Thus, chattering due to resonance can be prevented, thereby improving a surface accuracy.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: December 9, 2003
    Assignees: Mori Seiki Co., Ltd., Okuma Corporation
    Inventors: Makoto Fujishima, Yasushi Fukaya, Kazuo Yamazaki
  • Patent number: 6661125
    Abstract: A two-phase planar linear motor used for an IC test handler etc. comprising a platen (50) having a platen surface formed with a plurality of platen dots (D) arranged in a matrix and a composite movable member (70) comprised of two X-axis movable members (60X) and two Y-axis movable members (20Y) connected in an in-plane perpendicular relationship. The platen (50) is a stacked member comprised at a plurality of magnetic sheets T stacked together and uses the parallel sheet edge surfaces as the platen surface (51).
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: December 9, 2003
    Assignee: Shinano Electronics Co., Ltd.
    Inventors: Masato Itoh, Kimihiko Taknaka, Katsuhiko Takeuchi
  • Patent number: 6660797
    Abstract: This invention provides a propylene-based composition for the molded polypropylene resin articles excellent in resistance to scratching and moldability, and well-balanced properties between high rigidity and high impact strength, and also provides a method for molding the above propylene-based composition, thereby providing high-performance industrial parts and automobile parts, in particular automobile interior parts.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: December 9, 2003
    Assignee: Japan Polychem Corporation
    Inventors: Yoshihiro Banno, Yoshihiro Sobajima, Akira Kobayashi, Masaaki Isoi
  • Patent number: 6661021
    Abstract: A micro electron gun that is capable of extracting electrons from a semiconductor utilizing a quantum size effect and that can be mounted individually for each of pixels is disclosed, as well as a picture display apparatus using such electron guns which is high in quantum efficiency, of high brightness and thin, as well as methods of manufacture thereof. Conduction electrons from a n-type semiconductor substrate (2) are accelerated under an electric field through a layer or layers (4) of quantum size effect micro particles (3) formed on surfaces of the n-type semiconductor substrate (2) and passed therethrough without undergoing phonon scattering, so that they when arriving at an electrode (5) may possess an amount of energy not less than the work function of the electrode (5) and are thus allowed to spring out into a vacuum.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: December 9, 2003
    Assignee: Japan Science and Technology Corporation
    Inventors: Shunri Oda, Xinwei Zhao, Katsuhiko Nishiguchi
  • Patent number: 6659634
    Abstract: An apparatus for feeding slurry to an external device. The apparatus includes a preparation tank for preparing the slurry. A circulation pipe is connected to the preparation tank to circulate the slurry. A feeding pipe is connected between the preparation tank and the external device to feed the external device with the slurry. A pump sends the chemical solution in the preparation tank to the circulation pipe and the feeding pipe. A concentration detector is arranged downstream to the pump to detect the concentration of the slurry. A controller controls the concentration of the chemical solution in the preparation tank in accordance with the detection value of the concentration detector and controls the feeding of the chemical solution.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: December 9, 2003
    Assignee: Fujitsu VLSI Limited
    Inventors: Naoki Hiraoka, Hiroshi Osuda, Hotaka Yamamoto
  • Patent number: 6659704
    Abstract: In the conventional air cargo transportation system, the transportation of the cargo that is stored inside of the airport terminal building, to the area of the loading/unloading door is normally performed using the package/cargo carts. However, numerous workers were needed to load the cargo and drive the carts, which is very labor intensive and entails high manpower costs. The conventional system is also dangerous as they move along the complex tarmac markings.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: December 9, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yugo Fukuhara, Toru Takasu
  • Patent number: 6660855
    Abstract: The crystal of the invention is crystal of diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate which is stable substantially without decomposition or degradation of properties even when left to stand at room temperature for 1 year. The crystal of the invention can be prepared by a process comprising the steps of concentrating a solution containing diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate represented by the formula (2) wherein Ph is a phenyl group, diluting the concentrate with acetic ester and mixing the diluted solution with hexane or a solvent mixture of hexane and acetic ester to crystallize the diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: December 9, 2003
    Assignees: Otsuka Chemical Co., Ltd., Taiho Pharmaceutical Co., Ltd.
    Inventors: Akihiro Shimabayashi, Ichiro Kawahara
  • Patent number: 6656416
    Abstract: A powder pressing apparatus comprises a powder feeding apparatus. The powder feeding apparatus includes a container having a bottom portion provided with a powder holding portion formed with openings, and an impactor. The impactor is hit against the container to give an impulsive force, thereby feeding the powder contained in the container into the cavity formed in a die via the openings. The powder fed in the cavity is pressed, and the obtained compact is sintered into a sintered magnet. The powder feeding apparatus may include a feeder box containing the powder, and the feeder box may be provided therein with a rod member, and an opening of the feeder box may be provided with a linear member. In this case, the powder is fed into the cavity while moving the rod member in the horizontal direction in the feeder box, when the feeder box is above the cavity.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: December 2, 2003
    Assignee: Sumitomo Special Metals Co., Ltd.
    Inventors: Akira Nakamura, Atsuo Tanaka, Shouichi Matsugami, Tadahiro Iwasaki, Yoshiro Takano
  • Patent number: 6655914
    Abstract: A casing cover is used in separating a motor assembly and a pump assembly from each other in a pump device. The casing cover has a cylindrical wall portion having a motor-side positioning portion disposed on one of an inner and outer circumferential surface of the cylindrical wall portion for being fitted to a member of the motor assembly, and a pump-side positioning portion disposed on the other of an inner and outer circumferential surface of the cylindrical wall portion for being fitted to a member of the pump assembly.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: December 2, 2003
    Assignee: Ebara Corporation
    Inventors: Yoshiaki Miyazaki, Hiroshi Uchida, Kenichi Kajiwara
  • Patent number: 6655168
    Abstract: An aircraft air conditioner uses a cooling device to cool air extracted from an engine before feeding it into a cabin. This extracted air is mixed with recirculation air that is returned to the cabin after flowing out from the cabin. The mixture of the recirculation air and the extracted air is fed into an air separating section. This air separating section has a selectively permeable membrane that separates the air flowing through an air flow path of the air conditioner into nitrogen-enriched gas and oxygen-concentrated air. The nitrogen-enriched gas is capable of being fed into a fuel peripheral region of the aircraft, and the oxygen-concentrated air is capable of being fed into the cabin.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: December 2, 2003
    Assignee: Shimadzu Corporation
    Inventors: Hisashi Mitani, Hidefumi Saito
  • Patent number: 6657789
    Abstract: The apparatus moves back a combining screen into a dashboard of a vehicle when the combining screen is not used. The combining screen is used for receiving an image emitted from a displaying device to superpose the image on a foreground of the vehicle such that the superposed image is visible for a driver's eye. The displaying device is disposed in the dashboard. The combining screen is positioned above the dashboard and inclined by a predetermined angle relative to an upward direction of the vehicle at its operational position. The apparatus has an outer moving means for moving the combining screen along a straight line between an operational position and an intermediate position and has an inner moving means for moving the combining screen along a curve between the intermediate position and a stored position in the dashboard. The intermediate position is located in the dashboard and above the displaying device.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: December 2, 2003
    Assignee: Yazaki Corporation
    Inventors: Go Nakamura, Kunimitsu Aoki, Yoshihide Takada
  • Patent number: 6657335
    Abstract: A stepping motor which includes: exciting coils; a rotor provided with a plurality of N/S poles so as to rotate following a change of an excitation state of the exciting coils; and a detecting coil provided separately from the exciting coils so as to generate induction voltage according to rotation of the rotor.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: December 2, 2003
    Assignee: Yazaki Corporation
    Inventor: Shigeki Totsuka
  • Patent number: 6655244
    Abstract: A centering apparatus for centering a disk about a center member such as a shaft or hub includes a plurality of pairs of actuator units. The actuator units of each of the pairs faces each other through the disk. Each of the actuator units has a member which moves linearly and can come into contact with the disk.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: December 2, 2003
    Assignee: Fujitsu Limited
    Inventors: Mitsuru Shiraishi, Koichi Oikawa, Hitoshi Komoriya, Yutaka Nakamura, Takao Hirahara
  • Patent number: 6657478
    Abstract: A voltage generation circuit including a capacitor, an n-channel MOS transistor, a p-channel MOS transistor and the like. The n-channel transistor has a source terminal connected to a node and a drain terminal employed as an output terminal for a negative voltage, the p-channel MOS transistor has a source terminal connected to the aforementioned node and a drain terminal employed as a ground terminal, gate terminals of the n-channel MOS transistor and the p-channel transistor are connected in common, and clock signals inverted in phase to each other are applied to the common node and a first terminal of the capacitor.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: December 2, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Shoichiro Matsumoto
  • Patent number: 6658311
    Abstract: A maintenance management system for a press line which enables even one person to carry out efficient maintenance operations. For this purpose, in the maintenance management system, a communication cable for a network is laid inside the press line with a management computer being the starting point, and a connector capable of being connected to a communicable device is placed in at least one predetermined location on the communication cable. A portable input/output terminal, which is connected to the connector, incorporates software for optionally detecting and displaying maintenance information in the management computer, and which allows an operator to operate the software, is included.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: December 2, 2003
    Assignee: Komatsu Ltd.
    Inventor: Eiji Doba
  • Patent number: 6656153
    Abstract: A balloon catheter of the present invention has an outer tube having a first lumen inside it. At the distal end of the outer tube is connected the proximal end of the balloon portion so that a balloon space is formed inside it, the distal end of the balloon portion is joined to a cylindrical front tip portion, and pressurized fluid is introduced into and released from the balloon space through the first lumen of the outer tube so as to make the balloon portion expand or contract. Inside the first lumen of the outer tube is arranged an inner tube having a second lumen freely slidable in the axial direction. The distal end of the inner tube projects out from the distal end of the outer tube and is detachably attached to the front tip portion. The balloon catheter of the present invention may have a guidewire detachably attached to the front tip portion rather than providing the inner tube.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: December 2, 2003
    Assignee: Nippon Zeon Co., LTD
    Inventors: Kouichi Sakai, Tetsuo Toyokawa, Takahiro Iida