Patents by Inventor Kouichi Yanagida

Kouichi Yanagida 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).

  • Muffler
    Patent number: 4874062
    Abstract: A muffler comprising a casing, a defining member for defining at least two resonance chambers in the casing, and a pipe for flowing a gas therethrough. Each of the resonance chambers has a different resonance frequency, and the pipe is communicated with each resonance chamber. Therefore, a plurality of noise frequencies can be suppressed.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: October 17, 1989
    Assignee: Kojima Press Industry Co., Ltd.
    Inventors: Kouichi Yanagida, Shinichiro Kano, Takeshi Gotou, Takashi Hirose