Patents by Inventor Mutsuo Ichihara

Mutsuo Ichihara 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).

  • Rotor housing for a rotary piston type engine and method for manufacturing the same
    Patent number: 3934321
    Abstract: Rotor housing for a rotary piston type engine comprising a liner made of a metal sheet having one surface formed with teeth-like projections, said liner being formed into a trochoidal configuration with said one surface directed outside, and an aluminum based metal housing substrate cast around the liner whereby firm bonding is assured between the liner and the housing substrate due to the existence of the projections. Novel method for manufacting such a rotor housing is also disclosed.
    Type: Grant
    Filed: April 9, 1974
    Date of Patent: January 27, 1976
    Assignee: Toyo Kogyo Co., Ltd.
    Inventors: Hirotaka Iida, Hiroshi Masaoka, Michinobu Yamada, Mutsuo Ichihara, Yoshitaka Uebayashi, Koji Tashiro, Sadao Taketomo
  • Rotor housing for a rotary piston type engine and method for manufacturing the same
    Patent number: RE29806
    Abstract: Rotor housing for a rotary piston type engine comprising a liner made of a metal sheet having one surface formed with teeth-like projections, said liner being formed into a trochoidal configuration with said one surface directed outside, and an aluminum based metal housing substrate cast around the liner whereby firm bonding is assured between the liner and the housing substrate due to the existence of the projections. Novel method for manufacturing such a rotor housing is also disclosed.
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: October 17, 1978
    Inventors: Hirotaka Iida, Hiroshi Masaoka, Michinobu Yamada, Mutsuo Ichihara, Yoshitaka Uebayashi, Koji Tashiro, Sadao Taketomo