Patents by Inventor Kazuo Tatsumi

Kazuo Tatsumi 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).

  • Gear part with lubrication coating and method of manufacturing the same
    Patent number: 7511000
    Abstract: A gear part of the present invention includes a lubrication coating formed on a surface of the gear part, the lubrication coating containing an organic phosphorous compound. In the gear part, when a tooth surface of the gear part is engaged with a tooth surface of a counter member, the organic phosphorous compound is transferred to the tooth surface of the counter member and another lubrication coating containing the organic phosphorous compound is formed on the tooth surface of the counter member. As a result, the lubrication coating can be held on the surface of the gear part for long periods.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: March 31, 2009
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yoshiharu Matsuda, Kazuo Tatsumi, Tohji Yokoyama
  • Gear part with lubrication coating and method of manufacturing the same
    Publication number: 20050145052
    Abstract: A gear part of the present invention includes a lubrication coating formed on a surface of the gear part, the lubrication coating containing an organic phosphorous compound. In the gear part, when a tooth surface of the gear part is engaged with a tooth surface of a counter member, the organic phosphorous compound is transferred to the tooth surface of the counter member and another lubrication coating containing the organic phosphorous compound is formed on the tooth surface of the counter member. As a result, the lubrication coating can be held on the surface of the gear part for long periods.
    Type: Application
    Filed: November 16, 2004
    Publication date: July 7, 2005
    Inventors: Yoshiharu Matsuda, Kazuo Tatsumi, Tohji Yokoyama