Patents by Inventor Shinichi Maruo

Shinichi Maruo 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).

  • Detector for determining rotational speed and position for an internal combustion engine
    Patent number: 6323642
    Abstract: A rotational position detecting apparatus for an internal-combustion engine for use with a Hall IC comprising at least two Hall elements for detecting the protrusion of a rotator. One of the two Hall elements is arranged with a magnet for forming a magnetic field, and the magnet is disposed on one side of the Hall IC to form a magnetic circuit for converging the magnetic flux on only one element within the Hall IC.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: November 27, 2001
    Assignee: Diamond Electric Mfg. Co., Ltd.
    Inventors: Masayuki Nishimura, Tsuyoshi Yamaguchi, Koji Hiragi, Shinichi Maruo, Mitsuhiro Izumi