Patents by Inventor Yuuji Omata

Yuuji Omata 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).

  • Laminated magnetic materials
    Patent number: 4897318
    Abstract: Soft magnetic laminated materials having both superior wear resistance and a high saturation magnetization comprising Fe-Si alloy films 1 having small magnetostriction, and films 2 of an amorphous alloy or Fe-Si-Al alloy having both small magnetostriction and excellent wear resistance, said first and second films being alternately laminated, the thickness (t.sub.1) of the first film and the thickness (t.sub.
    Type: Grant
    Filed: January 18, 1989
    Date of Patent: January 30, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroshi Sakakima, Koichi Osano, Yuuji Omata, Koichi Kugimiya, Satoru Mitani
  • Magnetic head having electromechanical transducer disposed at one end thereof
    Patent number: 4672496
    Abstract: A thin magnetic film is deposited over a nonmagnetic or piezoelectric substrate. When a shock wave is propagated through this substrate from its one end to the other end, the permeability of the thin magnetic film is locally increased and a portion or region having a high permeability also travels from one end to the other end of the thin magnetic film in unison with the shock wave. A magnetic core with a signal winding is disposed and magnetically coupled with the thin magnetic film. The signal can be recorded or reproduced while the recording medium is scanned.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: June 9, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenji Kanai, Nobuyuki Kaminaka, Noboru Nomura, Yuuji Omata