Patents by Inventor Toshiyuki Akitake

Toshiyuki Akitake 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).

  • Magneto-optical recording medium and method for production thereof
    Patent number: 5441804
    Abstract: A magneto-optical recording medium has on the substrate a recording layer made of a multi-layered metallic thin film comprising a first unit layer and a second unit layer. The first unit layer is composed of (Fe.sub.x Co.sub.1-x).sub.1-y M.sub.y where M represents at least one metal selected from the group consisting of Pt, Pd and Au, 0.5.ltoreq..times..ltoreq.1.0, and 0.01.ltoreq.y.ltoreq.0.1. The second unit layer is composed of a% least one metal selected from the group consisting of Nd, Dy, Gd and Tb. The first and second unit layers are superimposed alternately one on another.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: August 15, 1995
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Toshiyuki Akitake, Shingetsu Yamada