Patents by Inventor Tadashi Sato

Tadashi Sato has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Neutral beam processing apparatus and method
    Publication number: 20020033446
    Abstract: A neutral beam processing apparatus and method uses a neutral beam having an enlarged diameter and an increased capacity with suppressed divergence. The charged particles of the neutral beam are removed and the variations in energy are reduced. In particular, an ion beam is led from a plasma production cell and neutralized in a neutralization cell to be converted to a neutral beam, and an object to be processed is disposed in a process cell that is irradiated with the neutral beam. A multi-aperture electrode and a permanent magnet line are used for separating charged particles from the neutral beam. By an interaction between an electron cyclotron magnetic field generated by the permanent magnet line and microwaves introduced from a waveguide, a plasma and a flat space potential is generated in the neutralization cell. The neutral beam is obtained by converting the ion beam in the flat space potential.
    Type: Application
    Filed: March 14, 2001
    Publication date: March 21, 2002
    Inventors: Satoshi Ichimura, Katsutoshi Tsuchiya, Tadashi Sato, Yoshihiko Nagamine, Yoshiya Higuchi
  • Method and system for controlling contactless IC cards
    Patent number: 6352202
    Abstract: A reader/writer (RW) requires identification information pieces of respective plural IC cards (A, B, C). The plural IC cards return the respective identification information pieces in response to the requirement by the reader/writer. Logical addresses are assigned to some IC cards among the plural IC cards respectively to cause the reader/writer to select them in response to the return of the identification information pieces by the plural IC cards. The IC cards selected by the reader/writer are controlled. The reader/writer cancels the assignment of the logical address to one of the selected IC cards. The logical address, the assignment of which has been canceled by the reader/writer, is assigned to an IC card among the plural IC cards to which any logical address has not been assigned yet. The IC card to which the logical address has just been assigned is controlled.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: March 5, 2002
    Assignee: Denso Corporation
    Inventors: Masahiro Takiguchi, Kiyoshi Takahashi, Tatsuya Hirata, Shigeru Date, Hisanobu Dobashi, Shinji Nishimura, Kimiaki Ando, Tadashi Sato, Hiromi Sato, Toru Miura
  • Sputtering system, sputtering support system and sputtering control method
    Publication number: 20020014402
    Abstract: The present invention is characterized by; detecting the volume of impurities in said vacuum vessel wherein plasma is generated by radio frequency power supplied to the target electrode and substrate electrode, and a target is sputtered by ions in said plasma, thereby forming films on the substrate, and controlling the phase difference of radio frequency power supplied to each of said electrodes according to said detection value.
    Type: Application
    Filed: February 26, 2001
    Publication date: February 7, 2002
    Inventors: Yoshihiko Nagamine, Yoshiya Higuchi, Tadashi Sato, Tomoyuki Seino, Mitsuhiro Kamei
  • Data writing/reading apparatus
    Patent number: 6341102
    Abstract: A data handling apparatus is provided which includes a rotatable disk provided with at least an innermost track and an outermost track for storing data, and a disk cartridge for housing the disk. The disk cartridge is formed with an opening for exposure of a portion of the disk. The opening is substantially symmetrical with respect to a first center line extending radially of the disk. The data handling apparatus also includes a slider floatable relative to the disk, and a driving mechanism for moving the slider relative to the disk along a transfer path. This transfer path and the first center line of the opening are arranged to be non-parallel to each other.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: January 22, 2002
    Assignee: Fujitsu Limited
    Inventors: Tadashi Sato, Haruhiko Izumi, Goro Kawasaki, Satoshi Shimokawa
  • Plasma processing apparatus and plasma processing method using the same
    Patent number: 6332947
    Abstract: A plasma processing apparatus is provided with at least one waveguide portion for introducing microwaves, an electron heating space chamber formed on a downstream side with respect to a dielectric body in the waveguide portion, and a plasma generating space chamber coupled with the electron heating space chamber. A first static magnetic field generating device surrounds the electron heating space chamber using permanent magnets, producing a strong magnetic field exceeding an electron cyclotron resonance magnetic field strength along a propagation direction of the microwave in the electron heating space chamber and in a microwave leading-out portion of the dielectric body, and forming a cusped magnetic field.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: December 25, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Ichimura, Tadashi Sato, Isao Hashimoto
  • METHOD AND SYSTEM FOR CONTROLLING CONTACTLESS IC CARDS
    Publication number: 20010040185
    Abstract: A reader/writer (RW) requires identification information pieces of respective plural IC cards (A, B, C). The plural IC cards return the respective identification information pieces in response to the requirement by the reader/writer. Logical addresses are assigned to some IC cards among the plural IC cards respectively to cause the reader/writer to select them in response to the return of the identification information pieces by the plural IC cards. The IC cards selected by the reader/writer are controlled. The reader/writer cancels the assignment of the logical address to one of the selected IC cards. The logical address, the assignment of which has been canceled by the reader/writer, is assigned to an IC card among the plural IC cards to which any logical address has not been assigned yet. The IC card to which the logical address has just been assigned is controlled.
    Type: Application
    Filed: January 12, 1999
    Publication date: November 15, 2001
    Inventors: MASAHIRO TAKIGUCHI, KIYOSHI TAKAHASHI, TATSUYA HIRATA, SHIGERU DATE, HISANOBU DOBASHI, SHINJU NISHIMURA, KIMIAKI ANDO, TADASHI SATO, HIROMI SATO, TORU MIURA
  • Catalyst state detector for exhaust gas purifying catalyst
    Publication number: 20010025484
    Abstract: A catalyst state detector for detecting a state of an exhaust gas purifying catalyst which is capable of accurately detecting the state, including deterioration, of an HC adsorbent contained in the exhaust gas purifying catalyst for adsorbing hydrocarbons in exhaust gases of an internal combustion engine, and can be manufactured at a low cost. The exhaust gas purifying catalyst is arranged at an intermediate portion of an exhaust pipe, and the HC adsorbent is capable of adsorbing hydrocarbons and moisture in exhaust gases. The catalyst state detector comprises a downstream humidity sensor arranged at a location downstream of the HC adsorbent in the exhaust pipe for detecting a humidity of the exhaust gases, and an adsorbent state detecting unit (ECU) for detecting the state of the HC adsorbent in accordance with the result of detection made by the downstream humidity sensor.
    Type: Application
    Filed: March 5, 2001
    Publication date: October 4, 2001
    Inventors: Masaki Ueno, Shusuke Akazaki, Masahiro Sato, Hideharu Yamazaki, Tetsuo Endo, Yoshihisa Iwaki, Takashi Haga, Tadashi Sato
  • Air-fuel ratio control system for internal combustion engine
    Patent number: 6292739
    Abstract: An allowable range (adaptive allowable range) for limiting a manipulated variable generated in order to converge the difference between an output from an O2 sensor disposed downstream of a catalytic converter and a target value thereof to “0” is sequentially updated depending on how the manipulated variable deviates from the allowable range.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: September 18, 2001
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Yasui, Shusuke Akazaki, Tadashi Sato, Masaki Ueno, Yoshihisa Iwaki, Hiroshi Tagami, Shuji Nagatani
  • Apparatus for controlling internal combustion engine
    Patent number: 6276131
    Abstract: While the amount of intake air introduced into an internal combustion engine is being increased by an intake air quantity control unit, an ignition timing control unit manipulates the ignition timing of the internal combustion engine to converge the rotational speed of the internal combustion engine to a target rotational speed according to a feedback control process (PI control process). The ignition timing control unit has a function to vary the feedback gain of the feedback control process depending on the ignition timing, such that the feedback gain is smaller as the ignition timing being manipulated is more retarded.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: August 21, 2001
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Masaki Ueno, Yuji Yasui, Yoshihisa Iwaki, Tadashi Sato, Shusuke Akazaki
  • Plant control system
    Patent number: 6266605
    Abstract: A plant control system has a reference value setting unit for variably setting a reference value for an air-fuel ratio to be given to an exhaust system including a catalytic converter, depending on a component based on an adaptive control law of a manipulated variable of the air-fuel ratio generated by a controller according to an adaptive sliding mode control process in order to converge an output of an O2 sensor disposed downstream of the catalytic converter to a target value. The plant control system also has an estimator for estimating the difference between an output of the O2 sensor after the dead time of the exhaust system and a target value therefor, using the difference between the set reference value and a detected value of the air-fuel ratio, and giving the estimated difference to the controller.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: July 24, 2001
    Assignee: Honda Giken Kogyo Kabushiki
    Inventors: Yuji Yasui, Shusuke Akazaki, Tadashi Sato, Masaki Ueno, Yoshihisa Iwaki
  • Plant control system
    Patent number: 6230486
    Abstract: A plant control system has a reference value setting unit for variably setting a reference value for an air-fuel ratio to be given to an exhaust system including a catalytic converter, depending on a component based on an adaptive control law of a manipulated variable of the air-fuel ratio generated by a controller according to an adaptive sliding mode control process in order to converge an output of an O2 sensor disposed downstream of the catalytic converter to a target value. The manipulated variable generated by the controller represents the difference between the air-fuel ratio and the reference value, required to converge the output of the O2 sensor to the target value.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: May 15, 2001
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Yasui, Shusuke Akazaki, Tadashi Sato, Masaki Ueno, Yoshihisa Iwaki
  • Apparatus for suppressing warping optical disk and optical disk apparatus
    Patent number: 6212157
    Abstract: An apparatus for suppressing warping of a rotating optical disk including a disk warp suppressing member facing a surface of the upturned side of the optical disk in a manner to be in sliding contact with the optical disk, and an elastic member for supporting the disk warp suppressing member and forcing it toward the optical disk. The apparatus also has a carriage which faces a rotation region of the optical disk so as to move freely in the radial direction of the optical disk, and is provided with light beam irradiating means, with the elastic member being fitted to the carriage.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: April 3, 2001
    Assignee: Fujitsu Limited
    Inventors: Eiji Yabuki, Tadashi Sato
  • Air-fuel ratio control system for internal combustion engine
    Patent number: 6195988
    Abstract: An object system for generating an output signal of an O2 sensor from a target air-fuel ratio is expressed as a model including a response delay element and a dead time element. Data of identified values of parameters of the model are sequentially generated by an identifier. Data of an estimated value of the output signal of the O2 sensor after a dead time of the object system is sequentially generated by an estimator. The target air-fuel ratio is generated according to an adaptive sliding mode control process performed by a sliding mode controller using the data of the identified and estimated values. The air-fuel ratio of an internal combustion engine is manipulated on the basis of the target air-fuel ratio according to a feed-forward control process.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: March 6, 2001
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Yasui, Shusuke Akazaki, Tadashi Sato, Masaki Ueno, Yoshihisa Iwaki
  • Apparatus for controlling internal combustion engine
    Patent number: 6189317
    Abstract: An apparatus for controlling an internal combustion engine has an amount-of-intake-air control unit for generating a command value for the opening of a flow control valve in an intake passage of the engine, which emits exhaust gases through a catalytic converter, so as to increase an amount of intake air introduced into a combustion chamber by a predetermined quantity greater when the engine operates in an idling mode after it has started to operate than when the engine operates in a normal idling mode, and controlling the opening of the flow control valve based on the generated command value, and an ignition timing control unit for controlling the ignition timing according to a feedback control process to correct the ignition timing so as to be retarded in order to converge the rotational speed of the engine to a predetermined target rotational speed while the amount of intake air is being increased.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: February 20, 2001
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Yasui, Shusuke Akazaki, Masaki Ueno, Tadashi Sato, Yoshihisa Iwaki
  • Head driving apparatus and optical disk apparatus
    Patent number: 6026064
    Abstract: A head driving apparatus has two yokes each having two generally parallel members which extend respectively in the direction generally perpendicular to the optical axis of a lens, and the yokes are disposed on both sides of the two side surfaces of the head. Two tubular head driving coils are fixed to the head and externally fitted on the member of each yoke, which is nearer to the head. At least a first magnet is fixed to the member of each yoke lying further from the head. A plurality of second magnets are fixed to the head and oppose the first magnets. The head is supported in a non-contact state by the repulsive forces of the first magnets and the second magnets, and the head is driven by energizing the head driving coils. An optical disk apparatus is equipped with the head driving apparatus.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: February 15, 2000
    Assignee: Fujitsu Limited
    Inventors: Haruhiko Izumi, Tadashi Sato, Takayuki Kawabe
  • Plasma processing apparatus and plasma processing method using the same
    Patent number: 5961773
    Abstract: A plasma processing apparatus is provided with at least one waveguide portion for introducing microwaves, an electron heating space chamber formed on a downstream side with respect to a dielectric body in the waveguide portion, and a plasma generating space chamber coupled with the electron heating space chamber. A first static magnetic field generating device surrounds the electron heating space chamber using permanent magnets, producing a strong magnetic field exceeding an electron cyclotron resonance magnetic field strength along a propagation direction of the microwave in the electron heating space chamber and in a microwave leading-out portion of the dielectric body, and forming a cusped magnetic field.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: October 5, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Ichimura, Tadashi Sato, Isao Hashimoto
  • Separating agent comprising bonded conalbumin
    Patent number: 5900144
    Abstract: Disclosed is an optical isomer separating agent composed of a stationary phase having a support and a chemically modified conalbumin. The separating agent may be used in a high-performance liquid chromatography column.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: May 4, 1999
    Assignee: Eisai Co., Ltd.
    Inventors: Nariyasu Mano, Yoshiya Oda, Toshinobu Miwa, Naoki Asakawa, Yutaka Yoshida, Tadashi Sato
  • Recording data erecting apparatus
    Patent number: 5752108
    Abstract: A recording data erecting apparatus for a camera comprises a data input section for inputting a recording data, and a data recording section for recording the recording data in a vertical direction of a photosensitive surface of a film or a horizontal direction thereof. An erection direction input unit is electrically connected to the data recording section for inputting an erection direction of the recording data. A display unit is electrically connected to the data input section for displaying the erection direction of the recording data.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: May 12, 1998
    Assignee: Seiko Instruments Inc.
    Inventor: Tadashi Sato
  • Ion beam processing apparatus
    Patent number: 5750987
    Abstract: When neutralized plasma is generated, the cylindrical electrode 8 is set at a negative potential against the processing chamber 23 by the DC power source 18, so that ions 23 in the neutralized plasma can be collected at the cylindrical electrode 8. Electrons 24 equal to the collected ion charge can be supplied uniformly toward the ion beam 25. Therefore, by allowing the cylindrical electrode to collect ions, the ion collection area can be spread easily, and only by generating neutralized plasma of low density, a sufficient volume of ions can be collected surely from the plasma and a sufficient volume of electrons can be supplied to the ion beam 25 at the same time.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: May 12, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Ichimura, Tadashi Sato, Kenzo Kobayashi, Shotaro Ohishi, Hisao Oonuki
  • Microwave plasma generator
    Patent number: 5620522
    Abstract: A microwave plasma generator, wherein permanent magnets 3 forms intense magnetic field exceeding an intensity of electron cyclotron resonance magnetic field at microwave exit 6a of a dielectric body in an electron heating space chamber, the intensity of the magnetic field formed by the permanent magnet decreases rapidly to the zero at a point 14 in the vicinity of the boundary of the electronic heating space camber 1 and a plasma generating space chamber 2, and accordingly, most of electrons can be absorbed into electrons to heat and form high energy electrons at a position 12a-12c in electron cyclotron resonance layer 12.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: April 15, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Ichimura, Tadashi Sato, Takashi Iga, Kenichi Natsui