TREA

Keitaro Yamashita

Follow

Person

  • Saitana, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Magnet roll having an anisotropic bonded magnet portion containing...
    • Patent number 6,421,519
    • Issue date Jul 16, 2002
    • Hitachi Metals Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Developer-carrying member, and developing device and image forming...
    • Patent number 6,201,942
    • Issue date Mar 13, 2001
    • Canon Kabushiki Kaisha
    • Takao Honda
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnet roll and developing method using the same
    • Patent number 5,897,246
    • Issue date Apr 27, 1999
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnet roll and method of producing same
    • Patent number 5,668,519
    • Issue date Sep 16, 1997
    • Hitachi Metals Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Method of developing electrostatic latent image
    • Patent number 5,659,861
    • Issue date Aug 19, 1997
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Permanent magnet member and method of producing same
    • Patent number 5,649,362
    • Issue date Jul 22, 1997
    • Hitachi Metals, Ltd.
    • Mikio Yamamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Method for treating magnet roll by blasting with nonmagnetic spheri...
    • Patent number 5,608,502
    • Issue date Mar 4, 1997
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnet roll and method of producing same
    • Patent number 5,583,473
    • Issue date Dec 10, 1996
    • Takaishi & Asscoiates
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnet roll and method of producing same
    • Patent number 5,539,368
    • Issue date Jul 23, 1996
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Sleeve for developing roll member
    • Patent number 5,498,837
    • Issue date Mar 12, 1996
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Permanent magnet member and method of producing same
    • Patent number 5,488,341
    • Issue date Jan 30, 1996
    • Hitachi Metals, Ltd.
    • Mikio Yamamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Heat-fixing apparatus
    • Patent number RE33770
    • Issue date Dec 17, 1991
    • Hitachi Metals, Ltd.
    • Mitsuhiro Torino
    • 355 - Photocopying
  • Information Patent Grant

    Magnet roll
    • Patent number 4,992,767
    • Issue date Feb 12, 1991
    • Hitachi Metals, Ltd.
    • Waichi Hozumi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Developing apparatus
    • Patent number 4,911,100
    • Issue date Mar 27, 1990
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • B82 - NANO-TECHNOLOGY
  • Information Patent Grant

    Heat-fixing apparatus
    • Patent number 4,814,819
    • Issue date Mar 21, 1989
    • Hitachi Metals, Ltd.
    • Mitsuhiro Torino
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner recycling unit
    • Patent number 4,752,805
    • Issue date Jun 21, 1988
    • Kentek Information Systems, Inc.
    • Kensuke Fukae
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Directly heating fixing apparatus having current collecting bearings
    • Patent number 4,714,819
    • Issue date Dec 22, 1987
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Developing apparatus
    • Patent number 4,660,505
    • Issue date Apr 28, 1987
    • Hitachi Metals, Ltd.
    • Ryuji Goto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Printer/copier with disposable toner cartridge
    • Patent number 4,639,116
    • Issue date Jan 27, 1987
    • Kentek Information Systems, Inc.
    • Kensuke Fukae
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Developing apparatus
    • Patent number 4,601,259
    • Issue date Jul 22, 1986
    • Kentek Information Systems, Inc.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnet roll assembly
    • Patent number 4,597,661
    • Issue date Jul 1, 1986
    • Hitachi Metals Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnet roll and method of producing the same
    • Patent number 4,558,294
    • Issue date Dec 10, 1985
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Developing apparatus
    • Patent number 4,526,130
    • Issue date Jul 2, 1985
    • Hitachi Metals, Ltd.
    • Kozi Fukuda
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Pressure fixing device
    • Patent number 4,521,184
    • Issue date Jun 4, 1985
    • Hitachi Metals, Ltd.
    • Abe Samuels
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Apparatus for controlled delivery of magnetic toner
    • Patent number 4,496,240
    • Issue date Jan 29, 1985
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner cartridge
    • Patent number 4,441,636
    • Issue date Apr 10, 1984
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Developing apparatus
    • Patent number 4,436,055
    • Issue date Mar 13, 1984
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Process for depositing magnetic toner material on electrostatic lat...
    • Patent number 4,435,494
    • Issue date Mar 6, 1984
    • Hitachi Metals, Ltd.
    • Ryuji Goto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Recording method
    • Patent number 4,433,041
    • Issue date Feb 21, 1984
    • Hitachi Metals, Ltd.
    • Keitaro Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Apparatus for brush development including means for detecting toner...
    • Patent number 4,431,298
    • Issue date Feb 14, 1984
    • Hitachi Metals, Ltd.
    • Minoru Arai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY