Patents by Inventor Yigun Zhang

Yigun Zhang 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).

  • Tunnel magneto-resistive head and manufacturing method thereof
    Publication number: 20020135950
    Abstract: A tunnel magneto-resistive head includes a tunnel magneto-resistive film including an antiferromagnetic layer, a fixed magnetic layer, a tunnel insulating layer and a free magnetic layer; hard layers disposed at both sides of the tunnel magneto-resistive film for applying a bias magnetic field to the free magnetic layer; and deactivated parts having an insulating property, provided as both end parts of the antiferromagnetic layer and/or the fixed magnetic layer.
    Type: Application
    Filed: July 23, 2001
    Publication date: September 26, 2002
    Applicant: FUJITSU LIMITED
    Inventors: Yigun Zhang, Hideyuki Kikuchi, Jun-ichi Hashimoto, Michiaki Kanamine, Hitoshi Kanai