Patents by Inventor Hiroaki Takaba

Hiroaki Takaba 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).

  • Compact structure of gas sensor and production method thereof
    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
  • Sheathed heater
    Patent number: 4639712
    Abstract: A sheathed heater comprising a metallic sheath, such as a stainless steel sheath, an electric heating element disposed within the sheath so that an electric current can be supplied thereto, and a filling material filled in the sheath for insulating the heating element from the sheath and the coils of the heating element from each other. Aluminum nitride powder is used as the filling material to prevent oxidation of the heating element by the oxygen discharged from the filling material.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: January 27, 1987
    Assignee: Nippondenso Co., Ltd.
    Inventors: Akihiro Kobayashi, Shunzo Yamaguchi, Kiyomi Kobayashi, Hiroaki Takaba