Patents by Inventor Koichi Ikawa

Koichi Ikawa 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: 8393196
    Abstract: Between a gas sensing layer (4) and a base member (15) composed of a silicon substrate (2) and an insulating coat layer (3), there is formed an adhesion layer 7, to improve the adhesion therebetween, and to prevent separation. The gas sensing layer (4) and sensing electrodes (6) are electrically connected by abutment of a confronting surface (61) of sensing electrodes (6) confronting the gas sensing layer (4) and sides surfaces of the sensing electrodes on both sides, on the gas sensing layer (4), and accordingly the gas sensor properly senses an electric characteristic of the gas sensing layer (4) varied in accordance with a concentration variation of a specified gas. Furthermore, the sensing electrodes (6) are in contact with the gas sensing layer (4), but the sensing electrodes are not in contact with the adhesion layer (7).
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: March 12, 2013
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Koichi Ikawa, Masahito Kida, Shinichiro Kito, Yoshinori Tsujimura, Takio Kojima
  • Publication number: 20100147685
    Abstract: Between a gas sensing layer (4) and a base member (15) composed of a silicon substrate (2) and an insulating coat layer (3), there is formed an adhesion layer 7, to improve the adhesion therebetween, and to prevent separation. The gas sensing layer (4) and sensing electrodes (6) are electrically connected by abutment of a confronting surface (61) of sensing electrodes (6) confronting the gas sensing layer (4) and sides surfaces of the sensing electrodes on both sides, on the gas sensing layer (4), and accordingly the gas sensor properly senses an electric characteristic of the gas sensing layer (4) varied in accordance with a concentration variation of a specified gas. Furthermore, the sensing electrodes (6) are in contact with the gas sensing layer (4), but the sensing electrodes are not in contact with the adhesion layer (7).
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Applicant: NGK Spark Plug Co. Ltd
    Inventors: Koichi Ikawa, Masahito Kida, Shinichiro Kito, Yoshinori Tsujimura, Takio Kojima
  • Patent number: 7661703
    Abstract: A cut that widens a through hole of an end portion of a headliner interior material breaks when an airbag is deployed, and is formed on an exterior-side of the end portion. The end portion of the headliner interior material is in close contact with a surrounding member provided around the end portion. In addition, an accessory is passed through the through hole and fixed to a body, while the end portion of the headliner interior material is held to the accessory around the through hole. When the airbag installed folded on the exterior side of the headliner interior material is deployed, the airbag deploys into a cabin from between the end portion and the surrounding member.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: February 16, 2010
    Assignee: Hayashi Engineering Inc.
    Inventors: Kotaro Ono, Koichi Ikawa
  • Patent number: 7487675
    Abstract: A micro-heater including a semiconductor substrate having a cavity; an insulating layer provided on an upper side of the semiconductor substrate and closing the cavity; and a heater element embedded in a portion of the insulating layer above the cavity and including a metallic material. The insulating layer includes: a compressive stress film made of silicon oxide; and a tensile stress film made of silicon nitride. The tensile stress film has a thickness not less than that of the compressive stress film.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: February 10, 2009
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Koichi Ikawa, Yoshinori Tsujimura, Takio Kojima
  • Publication number: 20070228702
    Abstract: A cut that widens a through hole of an end portion of a headliner interior material breaks when an airbag is deployed, and is formed on an exterior-side of the end portion. The end portion of the headliner interior material is in close contact with a surrounding member provided around the end portion. In addition, an accessory is passed through the through hole and fixed to a body, while the end portion of the headliner interior material is held to the accessory around the through hole. When the airbag installed folded on the exterior side of the headliner interior material is deployed, the airbag deploys into a cabin from between the end portion and the surrounding member.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 4, 2007
    Applicant: HAYASHI ENGINEERING INC.
    Inventors: Kotaro Ono, Koichi Ikawa
  • Publication number: 20060174703
    Abstract: A micro-heater including a semiconductor substrate having a cavity; an insulating layer provided on an upper side of the semiconductor substrate and closing the cavity; and a heater element embedded in a portion of the insulating layer above the cavity and including a metallic material. The insulating layer includes: a compressive stress film made of silicon oxide; and a tensile stress film made of silicon nitride. The tensile stress film has a thickness not less than that of the compressive stress film.
    Type: Application
    Filed: February 6, 2006
    Publication date: August 10, 2006
    Inventors: Koichi Ikawa, Yashinori Tsujimura, Takio Kojima