Patents by Inventor Masharu Nishimatsu

Masharu Nishimatsu 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: 4950535
    Abstract: A magnetic recording medium, comprising a substrate, a ferromagnetic film layer formed on the surface of said substrate, and a back coating layer deposited on the other surface of said substrate and formed of a mixture produced by dispersing a powdered non-magnetic substance in a binder containing therein a thermosetting resin and at least one lubricant selected from the group consisting of fatty acids and fatty acid ester.
    Type: Grant
    Filed: December 6, 1988
    Date of Patent: August 21, 1990
    Assignee: TDK Corporation
    Inventors: Hiroyuki Arioka, Masharu Nishimatsu, Toshiaki Ide