Patents by Inventor Toru Tachiwada

Toru Tachiwada 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 card having embossed portions and a magnetic layer having magnetic powders specified binder resins and a tensile elongation at break of 50 percent or more
    Patent number: 5356717
    Abstract: Disclosed is a magnetic card which comprises a substrate of a thermoplastic resin and a magnetic recording layer provided on the whole surface of at least one side of the substrate, wherein necessary matters such as letters and figures can be formed in a given area by embossing treatment, and wherein the magnetic recording layer consists of a magnetic film which contains 70% by weight or more of magnetic powders having a coercive force of 300 Oe or higher and which has a tensile break elongation of 50% or more.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: October 18, 1994
    Assignee: Sumitomo Bakelite Company Limited
    Inventors: Koji Choki, Masaharu Saito, Kunimasa Kobayashi, Toru Tachiwada, Katsufumi Awaya