Patents by Inventor Isao Watanabe

Isao Watanabe 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).

  • Patent number: 6527928
    Abstract: A heater is inserted into an inside chamber of a sensor element until a tip end of the heater is surely brought into contact with a bottom surface of the inside chamber. Next, a metallic holder is attached on an outside surface of the heater. Then, the metallic holder is slid along the outside surface of the heater toward the bottom surface of the sensor element to engage the metallic holder with an edge of the sensor element.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: March 4, 2003
    Assignee: Denso Corporation
    Inventors: Isao Watanabe, Michihiro Yamakawa, Masanori Fukutani
  • Patent number: 6512351
    Abstract: When a mobile unit moves with a motor driven by electric power supplied by a power supply line without a contact when the mobile unit moves where the power supply line exists. The electric power supplied without a contact is also used in charging a electric double layer capacitor. Since the charging current is limited by limiting resistance, the motor can be supplied with sufficient power although the electric double layer capacitor is in a vacant (completely discharged) state.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: January 28, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Tatsuya Uematsu, Isao Watanabe, Tadashi Kondo
  • Patent number: 6507809
    Abstract: A high-speed performance simulation method and system for simulating the performance of a large-scaled system such as a parallel computer. In implementation, the large-scaled system is divided into subsystems or partial units and the divided subsystems are simulated in parallel. Even when a particular partial unit occupies a shared resource, high-speed, well-coordinated performance simulation is achieved. A performance simulation system includes a plurality of performance simulators and an overall control section connected to these performance simulators. The plurality of performance simulators individually simulate the performances of partial units into which a simulant is divided. The overall control section causes the performance simulators to conduct the simulation processes alternately every AT cycle.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: January 14, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Taisei Yoshino, Isao Watanabe, Yoshiko Tamaki
  • Publication number: 20020197399
    Abstract: A process for producing a MC-type conductive filler includes treating minute metallic particles with a coupling agent, preparing an oil phase of the coupling agent-treated minute metallic particles and a reactive substance A, the reactive substance A directly contacting the metallic particles. Then, an aqueous phase is prepared having a reactive substance B, which is capable of reacting with the reactive substance A, dissolved in water. Thereafter, the oil phase is dispersed in the aqueous phase to form a suspension. In situ reaction of the reactive substances A and B is then caused by applying heat to the suspension or adding a catalyst to the suspension. This forms a coating of a thermosetting insulating resin on the surface of the minute metallic particles. Alternatively, the reactive substance B may not be used.
    Type: Application
    Filed: May 14, 2002
    Publication date: December 26, 2002
    Applicant: Fujitsu Limited
    Inventors: Hiroaki Date, Makoto Usui, Isao Watanabe, Yuko Hozumi
  • Publication number: 20020144538
    Abstract: An improved structure of a gas sensor is provided. The gas sensor includes a hollow housing in which a gas sensing element is disposed, a protective cover installed on an end of the housing, a metallic cover installed on the other end of the housing, and an insulator in which end portions of leads connecting with the gas sensing element are disposed. The insulator is retained at a flange thereof in the housing elastically using a washer. The protective cover is welded at an end thereof to the whole circumference of the end of the housing.
    Type: Application
    Filed: May 28, 2002
    Publication date: October 10, 2002
    Applicant: DENSO CORPORATION
    Inventors: Hirokazu Yamada, Takashi Kojima, Isao Watanabe
  • Publication number: 20020093310
    Abstract: When a mobile unit moves with a motor driven by electric power supplied by a power supply line without a contact when the mobile unit moves where the power supply line exists. The electric power supplied without a contact is also used in charging a electric double layer capacitor. Since the charging current is limited by limiting resistance, the motor can be supplied with sufficient power although the electric double layer capacitor is in a vacant (completely discharged) state.
    Type: Application
    Filed: November 8, 2001
    Publication date: July 18, 2002
    Inventors: Tatsuya Uematsu, Isao Watanabe, Tadashi Kondo
  • Patent number: 6415647
    Abstract: An improved structure of a gas sensor is provided. The gas sensor includes a hollow housing in which a gas sensing element is disposed, a protective cover installed on an end of the housing, a metallic cover installed on the other end of the housing, and an insulator in which end portions of leads connecting with the gas sensing element are disposed. The insulator is retained at a flange thereof in the housing elastically using a washer. The protective cover is welded at an end thereof to the whole circumference of the end of the housing.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: July 9, 2002
    Assignee: Denso Corporation
    Inventors: Hirokazu Yamada, Hiroaki Takaba, Takashi Kojima, Isao Watanabe
  • Patent number: 6406746
    Abstract: A process for producing a MC-type conductive filler includes treating minute metallic particles with a coupling agent, preparing an oil phase of the coupling agent-treated minute metallic particles and a reactive substance A, the reactive substance A directly contacting the metallic particles. Then, an aqueous phase is prepared having a reactive substance B, which is capable of reacting with the reactive substance A, dissolved in water. Thereafter, the oil phase is dispersed in the aqueous phase to form a suspension. In situ reaction of the reactive substances A and B is then caused by applying heat to the suspension or adding a catalyst to the suspension. This forms a coating of a thermosetting insulating resin on the surface of the minute metallic particles. Alternatively, the reactive substance B may not be used.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: June 18, 2002
    Assignee: Fujitsu Limited
    Inventors: Hiroaki Date, Makoto Usui, Isao Watanabe, Yuko Hozumi
  • Publication number: 20020042703
    Abstract: A method of effecting an analysis of behaviors of substantially all of a plurality of real segments together constituting a whole human body, by conducting a simulation of the behaviors using a computer under a predetermined simulation analysis condition, on the basis of a numerical whole human body model provided by modeling on the computer the whole human body in relation to a skeleton structure thereof including a plurality of bones, and in relation to a joining structure of the whole human body which joins at least two real segments of the whole human body and which is constructed to have at least one real segment of the whole human body, the at least one real segment being selected from at least one ligament, at least one tendon, and at least one muscle, of the whole human body.
    Type: Application
    Filed: October 2, 2001
    Publication date: April 11, 2002
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Katsuya Furusu, Isao Watanabe, Kazuo Miki
  • Publication number: 20020039484
    Abstract: An apparatus for recording and reproducing information data, which comprises an operation control portion operative to perform such a control operation, when an external command is supplied to the control unit under a situation in which data reproducing portion is in operation to reproduce one of information data blocks from a first recording medium in the form of compressed data and data recording and reproducing portion is in operation to record recording information data obtained based on the reproduced information data block on a second recording medium and to reproduce the recording information data from the second recording medium in the form of the reproduced compressed data, as to cause the data recording and reproducing portion to cease its recording and reproducing operations, to cause the data reproducing portion to reproduce a newly selected information data block from the first recording medium in the form of the compressed data in accordance with the external command, and then to cause the data
    Type: Application
    Filed: September 14, 2001
    Publication date: April 4, 2002
    Inventor: Isao Watanabe
  • Publication number: 20020026303
    Abstract: In verifying a logic operation of an information processing apparatus, an I/O emulator and a test program are operated in cooperation with each other and input data to the I/O emulator is automatically generated to generate more transaction conflict patterns and realize verification of the logic operation at a high precision.
    Type: Application
    Filed: July 20, 2001
    Publication date: February 28, 2002
    Inventors: Isao Watanabe, Kaoru Suzuki, Atsushi Kawai
  • Publication number: 20020016700
    Abstract: A method of effecting an analysis of behaviors of substantially all of a plurality of real segments together constituting a whole human body, by conducting a simulation of the behaviors using a computer under a predetermined simulation analysis condition, on the basis of a numerical whole human body model provided by modeling on the computer the whole human body in relation to a skeleton structure thereof including a plurality of bones, and in relation to a joining structure of the whole human body which joins at least two real segments of the whole human body and which is constructed to have at least one real segment of the whole human body, the at least one real segment being selected from at least one ligament, at least one tendon, and at least one muscle, of the whole human body.
    Type: Application
    Filed: May 21, 2001
    Publication date: February 7, 2002
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Katsuya Furusu, Isao Watanabe, Kazuo Miki
  • Patent number: 6319378
    Abstract: An improved structure of a gas sensor is provided which includes a hollow housing and a sensing element. The sensing element has a flange and is disposed within the housing in engagement of the flange with an inner wall of the housing. An insulating powder is packed in a chamber defined by the inner wall of the housing, the flange and an outer wall of the sensing element to provide an air-tight seal between an air chamber to which one end of the sensing element is exposed and a gas chamber to which the other end of the sensing element is exposed. The air-tight seal has the structure designed to minimize an air leakage and breakage of the sensing element when installed in the housing.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: November 20, 2001
    Assignee: Denso Corporation
    Inventors: Takashi Kojima, Isao Watanabe, Hirokazu Yamada
  • Patent number: 6303013
    Abstract: A gas sensor has a housing integrally formed with a caulked fixation portion. A detection element is inserted into the housing and fixed therein by caulking the caulked fixation portion via a sealing member such as a metallic ring. The caulked fixation portion is composed of a caulked portion and a buckling portion, and satisfies dimensional relationships of T1<T3<T2; 2<T2/T1, and 3<L/{(T1+T2)/2}. T1 is a minimum thickness of the caulked portion, and T2 is a maximum thickness of the caulked portion. T3 is an average thickness of the buckling portion, and L is a length of the caulked portion in an axial direction of the gas sensor.
    Type: Grant
    Filed: January 3, 2000
    Date of Patent: October 16, 2001
    Assignee: Denso Corporation
    Inventors: Isao Watanabe, Takashi Kojima
  • Patent number: 6261617
    Abstract: Potatoes are skin pared, pelletized, steamed, dried and inflated into thin bars, sprayed with seasoning without oil or with a limited quantity of oil and dried such that a snack cake containing little oil and having a crunching feel when chewed is produced.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: July 17, 2001
    Inventor: Isao Watanabe
  • Patent number: 6258234
    Abstract: Air fuel ratio sensor for use in an exhaust gas purification system for an internal combustion engine. The sensor has an outer and inner cover 12 and 13 for protection of lead wires 16, 18 and 19 to a detecting element 3 and a heater 5 of the sensor, a rubber seal for 2 for obtaining a sealing between the covers and the lead wires and a water repellent filter 36 for obtaining a seal between the inner and outer covers 12 and 13, while keeping an air ventilation capability of the space inside the covers. For receiving the lead wires 16, 18 and 19, the seal 2 is formed with holes 20 such that the minimum thickness between the holes and the minimum thickness between the hole and an outer surface of the seal is 1 mm or more. A crimping of the outer cover 12 is done so that a deformation of the seal 2 in a range between 10 to 20% of the outer diameter is obtained.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: July 10, 2001
    Assignee: Denso Corporation
    Inventors: Isao Watanabe, Michihiro Yamakawa, Masanori Fukutani, Toshihiro Sakawa, Nobuyuki Tsuji, Minoru Ohta
  • Patent number: 6229162
    Abstract: With the object of providing a high-speed high-sensitivity planar-type avalanche photodiode (APD) that has high reliability, great manufacturing tolerance and a wide dynamic range, there is presented a planar-type avalanche photodiode, having on a semiconductor substrate a layered structure comprising specific 6 layers, a specific conductive-type acquired region in a peripheral section of a photo-sensitive region and a specific ring-shaped isolation trench region in said photo-sensitive region, wherein a ring-shaped region of the second conductive-type semiconductor cap layer that is inscribed in said ring-shaped isolation trench and located in the periphery of the photo-sensitive region is formed thin to have a thickness equal to or less than the thickness of said semiconductor multiplication layer, and the first conductive-type semiconductor field buffer layer located directly under the ring-shaped cap region, together with a peripheral region in the field buffer layer, is formed to have a lower carrier con
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: May 8, 2001
    Assignee: NEC Corporation
    Inventor: Isao Watanabe
  • Patent number: 6222372
    Abstract: A gas sensor measuring a given component content in a gas is provided which has an outer and an inner metallic cover, a sensing unit, and an insulator. The sensing unit consists of a measuring electrode to be exposed to the gas to be measured and a reference electrode to be exposed to a reference gas in a reference gas chamber. The measuring electrode and the reference electrode are disposed adjacent each other through a solid electrolyte body. The inner metallic cover is installed on an end of a sensor housing. The outer metallic cover is installed on the periphery of the inner metallic cover. The insulator is mounted within the inner metallic cover and has formed therein holes through which sensor signal pickup leads pass. The insulator has an outer wall different in geometry from an inner wall of the inner metallic cover to define a portion of a reference gas passage therebetween which leads to the reference gas chamber.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: April 24, 2001
    Assignee: Denso Corporation
    Inventors: Kenji Fukaya, Masanobu Yamauchi, Isao Watanabe, Hirokazu Yamada, Takashi Kojima
  • Patent number: 6214186
    Abstract: An improved structure of a gas sensor is provided. The gas sensor includes a gas sensitive element, a holder retaining therein the gas sensitive element, and a protective cover installed on the holder. The protective cover has a flange which is retained in a groove formed in the holder by crimping an outer extension formed on the holder adjacent the groove. The geometries of the groove in the holder and the flange of the protective cover are so determined as to provide for ease of installation of the protective cover on the holder, firm engagement of the protective cover with the groove of the holder, and ease of machining of the groove of the holder.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: April 10, 2001
    Assignee: Denso Corporation
    Inventors: Isao Watanabe, Takashi Kojima, Hirokazu Yamada
  • Patent number: 6210641
    Abstract: An air-fuel ratio control system for a gas-fueled engine which is capable of achieving the combustion in a target air-fuel ratio to surely purify an exhaust gas through an exhaust purification catalyst. In the air-fuel ratio control system, a three-way catalytic converter is placed in an exhaust pipe of the engine and an O2 sensor is located on the upstream side of the three-way catalytic converter. The O2 sensor comprises an element, and an atmosphere side electrode is formed on an inner surface of the element while an exhaust gas side electrode is formed on an outer surface thereof. The exhaust gas side electrode is coated with a catalyst layer which can remove hydrogen through a catalytic reaction. A control unit of the control system controls a fuel supply quantity by a gas injector using a feedback correction coefficient on the basis of the output of the O2 sensor, thereby reducing the deviation between an air-fuel ratio measured by the O2 sensor and a target air-fuel ratio.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: April 3, 2001
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Jun Yamada, Kenji Kanehara, Motomasa Iizuka, Takeshi Mizobuchi, Hidetaka Hayashi, Kouhei Yamada, Isao Watanabe, Takahiko Kuroda