Patents by Inventor Kazuyuki Usui

Kazuyuki 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).

  • Magnetic recording medium
    Patent number: 6875505
    Abstract: A magnetic recording medium comprising a flexible support, a first recording layer, an intermediate layer and a second recording layer in this order, wherein the second recording layer comprises a ferromagnetic metal alloy comprising Co, Pt and Cr, and a nonmagnetic oxide.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: April 5, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kenichi Moriwaki, Kazuyuki Usui
  • Magnetic recording medium
    Publication number: 20030219629
    Abstract: A magnetic recording medium comprising a flexible support, a first recording layer, an intermediate layer and a second recording layer in this order, wherein the second recording layer comprises a ferromagnetic metal alloy comprising Co, Pt and Cr, and a nonmagnetic oxide.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 27, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Kenichi Moriwaki, Kazuyuki Usui
  • Magnetic recording medium
    Publication number: 20030175555
    Abstract: A magnetic recording medium comprising a flexible support and a magnetic layer selected from a cobalt/palladium multilayer film and a cobalt/platinum multilayer film.
    Type: Application
    Filed: March 12, 2003
    Publication date: September 18, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventor: Kazuyuki Usui