Patents by Inventor Ichiro Hidaki

Ichiro Hidaki 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).

  • Four-cycle spark ignition internal combustion engine
    Patent number: 4194473
    Abstract: In a four-cycle spark-ignition internal combustion engine, knocking under a high compression ratio can be prevented by replacing the burnt gas which remains within the cylinder at the end of an exhaust stroke by a gas, such as exhaust gas, which is at a temperature approximating normal temperature, and that the ignition timing is controlled so as not to precede the knocking limit ignition point.
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: March 25, 1980
    Inventor: Ichiro Hidaki