Patents by Inventor Makoto Fukagai

Makoto Fukagai 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).

  • Gas sensor and method for manufacturing the same
    Patent number: 7467538
    Abstract: A gas sensor and method of producing the same, the gas sensor including a sensor element extending along a longitudinal axis of the gas sensor; a metal shell surrounding the sensor element; and a protector fixed on a front portion of the metal shell and covering a front portion of the sensor element which projects from the front end of the metal shell, wherein an oil agent is present on one or both of an inner gas-receiving surface of the metal shell and an inner peripheral surface of the protector in a total amount of less than 0.7 mg.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: December 23, 2008
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Toru Furuichi, Makoto Fukagai, Akio Mizutani
  • Gas sensor and method for manufacturing the same
    Publication number: 20070146960
    Abstract: A gas sensor and method of producing the same, the gas sensor including a sensor element extending along a longitudinal axis of the gas sensor; a metal shell surrounding the sensor element; and a protector fixed on a front portion of the metal shell and covering a front portion of the sensor element which projects from the front end of the metal shell, wherein an oil agent is present on one or both of an inner gas-receiving surface of the metal shell and an inner peripheral surface of the protector in a total amount of less than 0.7 mg.
    Type: Application
    Filed: December 1, 2006
    Publication date: June 28, 2007
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Toru Furuichi, Makoto Fukagai, Akio Mizutani