Patents by Inventor Hiroyuki Ohiwa

Hiroyuki Ohiwa 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).

  • Automatic gear change control apparatus for automobile and method of controlling same
    Patent number: 5031479
    Abstract: There are disclosed an automatic gear change control apparatus for an automobile and a method of controlling such apparatus. A rotational output of an internal combustion engine is connected to drive wheels of the automobile and a load device. When a gear shifting-up of an automatic transmission is to be effected, the load applied by the load device is increased, or the load is connected to an output rotation shaft of the engine via a selectively-connecting device, thereby reducing the rotational speed of the output rotation shaft of the engine to a required level.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: July 16, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Ibamoto, Keiichi Tokuyama, Hiroyuki Ohiwa, Hiroshi Kimura, Mitsuhiro Masuda