Patents by Inventor Yuji Andou

Yuji Andou 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: 4443514
    Abstract: A magnetic recording medium having a thin magnetic metal film formed on a non-magnetic base is disclosed. A thin film of a copolymer having vinylidene chloride and acrylonitrile as repeating units is formed on either the thin magnetic metal film or the surface of the base opposite the thin magnetic metal film or both. The resulting magnetic recording medium has improved running properties, wear resistance and electro-to-magnetic conversion characteristics.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: April 17, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuyuki Yamamoto, Yasuo Nishikawa, Yuji Andou, Kyoichi Naruo, Tsutomu Okita