Patents by Inventor Hirokuni Michikawa

Hirokuni Michikawa 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).

  • Means for accelerating the discharge of exhaust gas from an internal combustion engine
    Patent number: 4339918
    Abstract: Means for accelerating the discharge of exhaust gas from an internal combustion engine, adapted to be mounted to the end of the engine exhaust pipe, in which exhaust gas from the engine is swirlingly guided by a plurality of spiral blades disposed in a tubular member, to form a super low pressure space at the center of the exhaust gas flow, thereby to accelerate the discharge of the exhaust gas.
    Type: Grant
    Filed: September 11, 1980
    Date of Patent: July 20, 1982
    Inventor: Hirokuni Michikawa