Patents by Inventor Toshimitu Okutsu

Toshimitu Okutsu 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: 4687706
    Abstract: A magnetic recording medium is disclosed which comprises a non-magnetic support having magnetic recording layer on one surface thereof, and a backing layer on the surface opposite the magnetic recording layer, the backing layer containing inorganic particles having an average particle size of 0.02 .mu.m or less.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: August 18, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takahito Miyoshi, Toshimitu Okutsu, Masaaki Fujiyama