Patents by Inventor Hisataka Usui

Hisataka Usui 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).

  • Holding mechanism of an optical disk clamper and an optical disk drive using the same
    Publication number: 20030053401
    Abstract: An optical disk clamper holding mechanism that holds an optical disk clamper includes a surrounding unit, a flange unit, a rib that touches, when the optical disk clamper moves in the direction of the flange opening, a rim portion of an upper flange unit of the optical disk clamper, the rib protruding inwardly at a position opposite to the flange opening. Since the range of clearance in which the optical disk clamper can move in the optical disk clamper holding mechanism is restricted, the optical disk clamper always fits in the turntable normally and consequently, always clamps the optical disk normally.
    Type: Application
    Filed: September 13, 2002
    Publication date: March 20, 2003
    Inventors: Manabu Ogasawara, Yoshihiro Okano, Yoshihiro Shimazu, Masahiko Sakaguchi, Hisataka Usui
  • Optical disk recording reproduction apparatus
    Patent number: D481034
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: October 21, 2003
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Yoshihiro Okano, Hisataka Usui