Patents by Inventor Yoshifumi Kanda

Yoshifumi Kanda 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 and method for manufacturing the same
    Patent number: 5643686
    Abstract: A fixed permanent pattern is used for identifying a magnetic recording medium and a high security against forgery or modification is obtained by a magnetic recording medium including a non-magnetic support and at least two magnetic layers formed on said support, characterized in that at least one of said at least two magnetic layers contains magnetic particles having a coercive force of 4,000 Oe or less dispersed in a binder and has a non-rewritable fixed signal which has been recorded by magnetic field generated by a signal recorded on one or more other magnetic layers under the influence of an orientation magnetic field.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: July 1, 1997
    Assignee: Tokyo Magnetic Printing Co., Ltd.
    Inventors: Teiichi Isshiki, Masayuki Hatano, Junichi Hashimoto, Tomoaki Karino, Yoshifumi Kanda