Hiroshi Yoshikawa

Person

  • Kitasaku-gun, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Fluid dynamic pressure bearing for spindle motors and storage disk...

    • Patent number 7,764,463
    • Issue date Jul 27, 2010
    • Minebea Co., Ltd.
    • Rikuro Obara
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Method and device for forming a dynamic pressure-generating groove...

    • Patent number 7,160,431
    • Issue date Jan 9, 2007
    • Minebea Co., Ltd.
    • Hiroshi Yoshikawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Spindle motor

    • Patent number 6,826,010
    • Issue date Nov 30, 2004
    • Minebea Co., Ltd.
    • Hiroshi Yoshikawa
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Spindle motor

    • Patent number 6,794,774
    • Issue date Sep 21, 2004
    • Minebea Kabushiki Kaisha
    • Rikuro Obara
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Spindle motor

    • Patent number 6,734,591
    • Issue date May 11, 2004
    • Minebea Kabushiki Kaisha
    • Rikuro Obara
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Spindle motor

    • Patent number 6,563,243
    • Issue date May 13, 2003
    • Minebea Kabushiki Kaisha
    • Rikuro Obara
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Spindle motor

    • Patent number 6,512,316
    • Issue date Jan 28, 2003
    • Minebea Kabushiki Kaisha
    • Rikuro Obara
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Method of manufacturing casing base for hard disc drive device

    • Patent number 5,649,442
    • Issue date Jul 22, 1997
    • Minebea Kabushiki-Kaisha
    • Hiroshi Yoshikawa
    • G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

  • Information Patent Application

    Spindle motor for a hard disk drive

    • Publication number 20090102300
    • Publication date Apr 23, 2009
    • Thilo Rehm
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid Dynamic Pressure Bearing, Spindle Motor and Storage Disk Driv...

    • Publication number 20080030895
    • Publication date Feb 7, 2008
    • Rikuro Obara
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    Control device for fuel cell vehicle

    • Publication number 20070088468
    • Publication date Apr 19, 2007
    • Honda Motor Co., Ltd.
    • Asao Uenodai
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Method and device for forming a dynamic pressure-generating groove...

    • Publication number 20070023279
    • Publication date Feb 1, 2007
    • MINEBEA CO., LTD.
    • Hiroshi Yoshikawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Method and device for forming a dynamic pressure-generating groove...

    • Publication number 20040094430
    • Publication date May 20, 2004
    • MINEBEA CO., LTD.
    • Hiroshi Yoshikawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Spindle motor

    • Publication number 20030155826
    • Publication date Aug 21, 2003
    • Rikuro Obara
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    Spindle motor

    • Publication number 20030094870
    • Publication date May 22, 2003
    • MINEBEA KABUSHIKI-KAISHA
    • Rikuro Obara
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    Spindle motor

    • Publication number 20020047394
    • Publication date Apr 25, 2002
    • MINEBEA KABUSHIKI-KAISHA
    • Rikuro Obara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Spindle motor

    • Publication number 20020008431
    • Publication date Jan 24, 2002
    • MINEBEA KABUSHIKI-KAISHA
    • Rikuro Obara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Spindle motor

    • Publication number 20020006012
    • Publication date Jan 17, 2002
    • MINEBEA CO., LTD.
    • Hiroshi Yoshikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Spindle motor

    • Publication number 20010022478
    • Publication date Sep 20, 2001
    • MINEBEA KABUSHIKI-KAISHA
    • Rikuro Obara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...