Patents by Inventor Hiroyuki Oiwa

Hiroyuki Oiwa 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).

  • Electric power steering apparatus
    Patent number: 10011294
    Abstract: An electric power steering apparatus according to the present invention has a biasing member arranged to bias a rack retainer toward a rack bar, wherein a biasing force of the biasing member is set such that, in a two-axis coordinate system with a rotation amount of a steering wheel on a horizontal axis and a steering torque on a vertical axis, the steering torque increases with increase in the rotation amount of the steering wheel in a region before the start of relative movement of the rack bar and the rack retainer.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: July 3, 2018
    Assignees: HITACHI AUTOMOTIVE SYSTEMS, LTD., SUBARU CORPORATION
    Inventors: Hirokazu Okamoto, Yusuke Fukuda, Hiroyuki Oiwa, Mitsuharu Minami
  • ELECTRIC POWER STEERING APPARATUS
    Publication number: 20180043924
    Abstract: An electric power steering apparatus according to the present invention has a biasing member arranged to bias a rack retainer toward a rack bar, wherein a biasing force of the biasing member is set such that, in a two-axis coordinate system with a rotation amount of a steering wheel on a horizontal axis and a steering torque on a vertical axis, the steering torque increases with increase in the rotation amount of the steering wheel in a region before the start of relative movement of the rack bar and the rack retainer.
    Type: Application
    Filed: March 17, 2016
    Publication date: February 15, 2018
    Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD., SUBARU CORPORATION
    Inventors: Hirokazu OKAMOTO, Yusuke FUKUDA, Hiroyuki OIWA, Mitsuharu MINAMI
  • Glass forming mold
    Patent number: 6868699
    Abstract: A glass forming mold comprising a mold having a molding surface, a chromium coating film formed on the molding surface and a silicon oxide film formed on the surface of the chromium coating film.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: March 22, 2005
    Assignee: Asahi Glass Company, Limited
    Inventors: Hiroyuki Oiwa, Toshihiro Ohashi, Yuichi Yamamoto, Atsuyoshi Takenaka
  • Glass forming mold and process for its production, and method for producing a glass product for a cathode ray tube
    Publication number: 20030005725
    Abstract: A glass forming mold comprising a mold having a molding surface, a chromium coating film formed on the molding surface and a silicon oxide film formed on the surface of the chromium coating film.
    Type: Application
    Filed: May 28, 2002
    Publication date: January 9, 2003
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroyuki Oiwa, Toshihiro Ohashi, Yuichi Yamamoto, Atsuyoshi Takenaka