Patents by Inventor Ichiro Nobuhara

Ichiro Nobuhara 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
    Patent number: 5576102
    Abstract: A magneto optical recording medium comprising the following elements has been developed:a substrate;an interference layer of tantalum oxide having 500 to 1,200 .ANG. in thickness and formed on said substrate;a recording layer formed on said interference layer;a heat insulating layer of silicon nitride, silicon oxide or a mixture thereof having 200 to 500 .ANG. in thickness and formed on said recording layer; anda reflective layer of Al or an Al-based alloy having 400 to 1,200 .ANG. in thickness and formed on said heat insulating layer.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: November 19, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoshiyuki Kisaka, Ichiro Nobuhara, Seiki Nojiri, Toshifumi Kawano