Patents by Inventor Shoyu Ito

Shoyu Ito 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).

  • Magneto-optical recording medium
    Patent number: 7164623
    Abstract: The present invention provides a magneto-optical recording medium including a recording layer, an intermediate layer and a reproducing layer stacked in this order. Information recorded in the recording layer is transferred to the reproducing layer through the intermediate layer so that the information is reproduced. The reproducing layer includes an upper reproducing layer, a coupling layer, and a lower reproducing layer formed in this order on the intermediate layer. Magnetic information in the upper reproducing layer in an area whose temperature is increased to a predetermined temperature is transferred to the lower reproducing layer through the coupling layer.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: January 16, 2007
    Assignee: Fujitsu Limited
    Inventors: Ryo Kurita, Ken Tamanoi, Shoyu Ito, Motonobu Mihara
  • Magneto-optical recording medium
    Publication number: 20050024993
    Abstract: The present invention provides a magneto-optical recording medium including a recording layer, an intermediate layer and a reproducing layer stacked in this order. Information recorded in the recording layer is transferred to the reproducing layer through the intermediate layer so that the information is reproduced. The reproducing layer includes an upper reproducing layer, a coupling layer, and a lower reproducing layer formed in this order on the intermediate layer. Magnetic information in the upper reproducing layer in an area whose temperature is increased to a predetermined temperature is transferred to the lower reproducing layer through the coupling layer.
    Type: Application
    Filed: August 25, 2004
    Publication date: February 3, 2005
    Inventors: Ryo Kurita, Ken Tamanoi, Shoyu Ito, Motonobu Mihara
  • Magnetooptical recording medium including a connection layer that is non-magnetic by itself at room temperature but can be induced to exhibit magnetism when in contact with a magnetic layer
    Patent number: 6660404
    Abstract: A magnetooptical recording medium comprising at least a reproduction layer, an intermediate layer, a connection layer and a recording layer, wherein the reproduction layer and intermediate layer have a slant magnetic direction in a non-magnetic field, and the connection layer is composed of a layer non-magnetic at room temperature by itself which is induced to exhibit magnetism by contact with a magnetic layer.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: December 9, 2003
    Assignee: Fujitsu Limited
    Inventor: Shoyu Ito
  • Magnetooptical recording media and a reproduction method thereof
    Publication number: 20020068194
    Abstract: A magnetooptical recording medium comprising at least a reproduction layer, an intermediate layer, a connection layer and a recording layer, wherein the reproduction layer and intermediate layer have a slant magnetic direction in a non-magnetic field, and the connection layer is composed of a layer non-magnetic at room temperature by itself which is induced to exhibit magnetism by contact with a magnetic layer.
    Type: Application
    Filed: April 27, 2001
    Publication date: June 6, 2002
    Applicant: FUJITSU LIMITED
    Inventor: Shoyu Ito