Patents by Inventor Kazuhito Fukazawa

Kazuhito Fukazawa 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).

  • Manifold and manufacturing method thereof
    Patent number: 4864978
    Abstract: A structure and a method of manufacture of a manifold which is to be mounted either on the intake side or on the exhaust side of an internal combustion engine, which is formed by projecting branch pipes from one side of a pipe member in the form of straight pipes. The manifold is further provided with grooves for gas leakage prevention and for rotation prevention at the connection between branch pipes and flanges caulked to the free ends thereof.
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: September 12, 1989
    Assignees: Mitsui & Co., Ltd., Kokan Kako Co., Ltd.
    Inventor: Kazuhito Fukazawa