Patents by Inventor Etsuo Izu

Etsuo Izu 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 head with Ru containing soft magnetic alloy in gap
    Patent number: 4953050
    Abstract: A magnetic head is disclosed which is formed by magnetic core halves constituted of an oxide magnetic material and soft magnetic thin films, wherein the boundary surfaces between the thin films and the oxide magnetic material runs substantially parallel to the gap surface in the vicinity of the magnetic gap. The soft magnetic thin films are soft magnetic thin films of the Fe-Ga-Si system consisting essentially of Fe, Ga and Si.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: August 28, 1990
    Assignee: Sony Corporation
    Inventors: Tatsuo Kumura, Heikichi Sato, Yoshiyuki Kunito, Yoshito Ikeda, Etsuo Izu, Masatoshi Hayakawa