Patents by Inventor Muneyuki Ogata

Muneyuki Ogata 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 thin film
    Patent number: 4683012
    Abstract: A magnetic thin film consisting essentially of Fe, Al and Si and further containing nitrogen has high magnetic permeability and high hardness without lowering the magnetic properties such as saturation magnetic flux density or coercive force.The magnetic thin film has an increased specific resistivity and a lowered eddy current loss in the high frequency region and is suitable for a core material of magnetic transducer heads used in a high frequency region.The magnetic thin film is prepared by, for example, physical vapor deposition or ion implantation.
    Type: Grant
    Filed: April 5, 1985
    Date of Patent: July 28, 1987
    Assignee: Sony Corporation
    Inventors: Kazushi Yamauchi, Muneyuki Ogata, Tomio Kobayashi, Makoto Kubota, Tatsuo Kumura
  • Magnetic thin film
    Patent number: 4671828
    Abstract: A magnetic thin film consisting essentially of Fe, Al and Si and further containing oxygen has high magnetic permeability and high hardness without lowering the magnetic properties such as saturation magnetic flux density or coercive force.The magnetic thin film has an increased specific resistivity and a lowered eddy current loss in the high frequency region and is suitable for a core material of magnetic transducer heads used in a high frequency region.The magnetic thin film is prepared by, for example, physical vapor deposition or ion implantation.
    Type: Grant
    Filed: April 5, 1985
    Date of Patent: June 9, 1987
    Assignee: Sony Corporation
    Inventors: Kazushi Yamauchi, Muneyuki Ogata, Tomio Kobayashi, Makoto Kubota, Tatsuo Kumura