Patents by Inventor Hisao Kuroki

Hisao Kuroki 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).

  • Angular velocity sensor, related method for manufacturing the sensor, and piezoelectric vibrator element used in this sensor
    Patent number: 6360600
    Abstract: Drive electrodes and sensing electrodes are formed on a front face of a piezoelectric body of a vibrator. A first reference electrode is formed on a rear face. Second reference electrodes are formed on side faces of arm bars of the vibrator at a position corresponding to the sensing electrodes. The second reference electrodes are connected to the first reference electrode formed on said rear face.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: March 26, 2002
    Assignee: Denso Corporation
    Inventors: Hisao Kuroki, Rikiya Kamimura
  • Gas sensor with ceramic heater
    Publication number: 20010050280
    Abstract: An easy-to-manufacture structure of a ceramic heater having a high durability and a manufacturing method thereof are provided. The ceramic heater may be used in an oxygen sensor for automotive air-fuel ratio control systems and includes a ceramic square rod formed with a laminate of a heater substrate on which a heater-patterned layer consisting of a heater element and leads is formed and a covering substrate covering the heater-patterned layer. Metallic terminals are connected electrically to the leads of the heater-patterned layer, respectively, and mounted on surfaces of the ceramic square rod opposed to each other in a direction of lamination of the heater substrate and the covering substrate, respectively. At least one outer lead is joined to one of the metallic terminals through a bonding layer.
    Type: Application
    Filed: February 15, 2001
    Publication date: December 13, 2001
    Applicant: DENSO CORPORATION
    Inventors: Hirokazu Yamada, Makoto Shirai, Hisao Kuroki, Masayuki Kobayashi, Hirokazu Yamada
  • Gas sensor with ceramic heater
    Patent number: 6236028
    Abstract: A ceramic heater that may be used in an oxygen sensor for automotive air-fuel ratio control systems and includes a ceramic square rod formed with a laminate of a heater substrate on which a heater-patterned layer consisting of a heater element and leads is formed and a covering substrate covering the heater-patterned layer. Metallic terminals are connected electrically to the leads of the heater-patterned layer, respectively, and mounted on surfaces of the ceramic square rod opposed to each other in a direction of lamination of the heater substrate and the covering substrate, respectively. At least one outer lead is joined to one of the metallic terminals through a bonding layer.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: May 22, 2001
    Assignee: Denso Corporation
    Inventors: Makoto Shirai, Hisao Kuroki, Masayuki Kobayashi
  • Gas sensor with ceramic heater
    Patent number: 6194693
    Abstract: A ceramic heater that may be used in an oxygen sensor for automotive air-fuel ratio control systems and includes a ceramic square rod formed with a laminate of a heater substrate on which a heater-patterned layer consisting of a heater element and leads is formed and a covering substrate covering the heater-patterned layer. Metallic terminals are connected electrically to the leads of the heater-patterned layer, respectively, and mounted on surfaces of the ceramic square rod opposed to each other in a direction of lamination of the heater substrate and the covering substrate, respectively. At least one outer lead is joined to one of the metallic terminals through a bonding layer.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: February 27, 2001
    Assignee: DENSO Corporation
    Inventors: Makoto Shirai, Hisao Kuroki, Masayuki Kobayashi