Patents by Inventor Kiyoshige Shimaoka

Kiyoshige Shimaoka 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).

  • Leak tester and leak testing method
    Patent number: 5795995
    Abstract: This invention relates to a leak tester for testing the tightness of a test object such as a fuel feed apparatus for an internal combustion engine, and specifically to a leak tester for testing the air tightness of a fuel feed apparatus provided with a first opening and a second opening and having a space portion between the first and second openings.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: August 18, 1998
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Kiyoshige Shimaoka, Mauri Ukonmaanaho
  • High-pressure pump unit and test method therefor
    Patent number: 5731515
    Abstract: A high-pressure pump unit allowing an oiltight test for a high-pressure piping system after assembly without damaging parts which do not have a pressure resistance construction.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: March 24, 1998
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Tsutomu Tominaga, Masayasu Miyajima, Kazuhiro Geshi, Kiyoshige Shimaoka, Mauri Ukonmaanaho, Tomohide Maruyama