Patents by Inventor Tatsuhiko Oshino

Tatsuhiko Oshino 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).

  • Turbocharger for internal combustion engine
    Patent number: 5961281
    Abstract: A turbocharger for an internal combustion engine having a housing wall member located on an inner periphery of a metal compressor housing and facing a curved profile portion of the compressor impeller. The housing wall member is separately formed of a resin such as polyphenylene sulfide and integrally held and secured to the compressor housing.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: October 5, 1999
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Kazuo Ojima, Tatsuhiko Oshino
  • Turbocharger for internal combustion engine
    Patent number: 5785493
    Abstract: A turbocharger for an internal combustion engine, for improving the turbocharger efficiency by manufacturing a compressor housing by a non-expensive method excellent in productivity, has a structure that a housing wall member located on an inner periphery of a compressor housing metal portion and facing to a curved profile portion of a compressor impeller is separately formed by, for example, PPS resin-forming, and integrally held and secured by a screw member engaging with a screw hole provided in the housing metal portion.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: July 28, 1998
    Assignee: Hitachi, Ltd. and Hitachi Car Engineering Co., Ltd.
    Inventors: Kazuo Ojima, Tatsuhiko Oshino