Patents by Inventor Mitsunori Mochida

Mitsunori Mochida 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, method of producing the same, and recording and reading-out method
    Patent number: 6217970
    Abstract: The disclosure describes a magnetic recording medium having at least a magnetic layer, optionally by means of an under layer, on a non-magnetic substrate, wherein projections formed by irradiation of an energy beam and each having a height from 1 to 60 nm are provided at the number of 102 to 108 per 1 mm2 on the surface of any one of the non-magnetic substrate, the under layer, the magnetic layer and the magnetic recording medium.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: April 17, 2001
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoji Arita, Yuzo Seo, Ryuichi Yoshiyama, Junichi Kozu, Toshihiko Kuriyama, Mitsunori Mochida
  • Magnetic recording medium and method of producing the same
    Patent number: 5976714
    Abstract: The present invention relates to a magnetic recording medium comprising at least a magnetic layer, optionally by means of an under layer and an intermediate layer thereon, on a non-magnetic substrate and, occasionally a protective layer disposed on the magnetic layer, wherein projections each of a shape having a plurality of protrusions per one projection are formed by the number of from 10 to 10.sup.6 per 1 mm.sup.2 by irradiation of energy beam to a surface of at least one of the substrate, the under layer, the intermediate layer, the magnetic layer and the protective layer.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: November 2, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoji Arita, Mitsunori Mochida
  • Magnetic recording medium, method of producing the same, and recording and reading-out method
    Patent number: 5928759
    Abstract: The disclosure describes a magnetic recording medium having at least a magnetic layer, optionally by means of an under layer, on a non-magnetic substrate, wherein projections formed by irradiation of an energy beam and each having a height from 1 to 60 nm are provided at the number of 10.sup.2 to 10.sup.8 per 1 mm.sup.2 on the surface of any one of the non-magnetic substrate, the under layer, the magnetic layer and the magnetic recording medium.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: July 27, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoji Arita, Yuzo Seo, Ryuichi Yoshiyama, Junichi Kozu, Toshihiko Kuriyama, Mitsunori Mochida
  • Method of manufacturing a magnetic recording medium and a semiconductor laser texturing apparatus
    Patent number: 5759419
    Abstract: A method of manufacturing a magnetic recording medium having at least a magnetic layer, optionally by means of an underlayer, on a non-magnetic substrate, and occasionally having a protective layer disposed on the magnetic layer, comprises irradiating to the surface of the non-magnetic substrate, the underlayer, the magnetic layer, the protective layer or the magnetic recording medium, a laser beam from a semiconductor laser module that moves relatively to the non-magnetic substrate, thereby applying a texturing; and a semiconductor laser texturing apparatus comprises a substrate rotating mechanism, a semiconductor laser module including a semiconductor laser beam source, a collimator for converting a semiconductor laser beam into a parallel beam and a light focusing mechanism for irradiating the laser beam to a projection-forming surface of a substrate supported rotatably by the substrate rotating mechanism, and a relative moving mechanism for the substrate supported rotatably by the substrate rotating mecha
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: June 2, 1998
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Mitsunori Mochida, Hideaki Kaneda, Itaru Sakamoto