Patents by Inventor Kiyohito Nakai

Kiyohito Nakai 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).

  • Thin film yoke-type magnetoresistive head
    Patent number: 4803581
    Abstract: A thin film magnetic head including a lower yoke made of magnetic material having a high permeability, a magnetoresistive element and an upper yoke for transmitting magnetic flux to the magnetoresistive element. The upper yoke overlaps, at its rear end portion, a front end portion of the magnetoresistive element, while the lower yoke is formed, at its portion confronting the magnetoresistive element, with a groove such that the magnetoresistive element overlaps, at its rear end portion, the lower yoke.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: February 7, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toru Kira, Teiichi Miyauchi, Kiyohito Nakai, Kengo Shiiba, Mitsuhiko Yoshikawa