Patents by Inventor Ryousuke Isobe

Ryousuke Isobe 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: 5637390
    Abstract: A magnetic recording medium comprises a support, and provided thereon, a non-magnetic layer and an uppermost magnetic layer in that order, said non-magnetic layer containing an acicular non-magnetic powder, and said uppermost magnetic layer containing a ferromagnetic metal powder comprising Fe and Al.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: June 10, 1997
    Assignee: Konica Corporation
    Inventors: Ryousuke Isobe, Takafumi Yanagita, Kazuyoshi Imai