Patents by Inventor Eizi Chino

Eizi Chino 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: 4666784
    Abstract: A magnetic recording medium having a magnetic layer of superior smoothness and excellent abrasion resistance and durability. The magnetic layer contains a polyurethane resin having a metal sulfonate group in the amount of 10-1000 equivalents/10.sup.6 g of the polymer; an ester of C.sub.10 -C.sub.18 fatty acid with butyl cellosolve and ferromagnetic fine particles.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: May 19, 1987
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Chyuji Inukai, Eizi Chino, Yoshio Tojima, Hideki Komagata, Masanori Nakamura