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Ryouichi Nakajima

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Patents Grantslast 30 patents

  • Information Patent Grant

    Fluid dynamic bearing apparatus and a motor using the same
    • Patent number 8,002,471
    • Issue date Aug 23, 2011
    • NTN Corporation
    • Fuminori Satoji
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rolling bearing
    • Patent number 7,938,583
    • Issue date May 10, 2011
    • NTN Corporation
    • Hideaki Tanaka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fluid dynamic bearing apparatus and a motor using the same
    • Patent number 7,819,585
    • Issue date Oct 26, 2010
    • NTN Corporation
    • Fuminori Satoji
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Fluid dynamic bearing device
    • Patent number 7,798,721
    • Issue date Sep 21, 2010
    • NTN CORPORATION
    • Katsuo Shibahara
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Fluid bearing device
    • Patent number 7,625,124
    • Issue date Dec 1, 2009
    • NTN Corporation
    • Fuminori Satoji
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Dynamic bearing device
    • Patent number 7,591,591
    • Issue date Sep 22, 2009
    • NTN CORPORATION
    • Kenji Ito
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fluid bearing device
    • Patent number 7,448,804
    • Issue date Nov 11, 2008
    • NTN Corporation
    • Fuminori Satoji
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Fluid bearing device
    • Patent number 7,399,121
    • Issue date Jul 15, 2008
    • NTN Corporation
    • Fuminori Satoji
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Fluid bearing device
    • Patent number 7,267,484
    • Issue date Sep 11, 2007
    • NTN Corporation
    • Fuminori Satoji
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Dynamic bearing device, producing method thereof, and motor using t...
    • Patent number 7,005,768
    • Issue date Feb 28, 2006
    • Nidec Corporation
    • Takehito Tamaoka
    • G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

  • Information Patent Application

    FLUID DYNAMIC BEARING APPARATUS AND A MOTOR USING THE SAME
    • Publication number 20100194215
    • Publication date Aug 5, 2010
    • Fuminori Satoji
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Dynamic Bearing Device
    • Publication number 20080203838
    • Publication date Aug 28, 2008
    • Isao Komori
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid Dynamic Bearing Apparatus and a Motor Using the Same
    • Publication number 20070280571
    • Publication date Dec 6, 2007
    • Fuminori Satoji
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid Dynamic Bearing Device
    • Publication number 20070274617
    • Publication date Nov 29, 2007
    • NTN CORPORATION
    • Katsuo Shibahara
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    Forming Method of Dynamic Pressure Generating Portion and Fluid Dyn...
    • Publication number 20070242908
    • Publication date Oct 18, 2007
    • Tatsuo Nakajima
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Rolling bearing
    • Publication number 20070242912
    • Publication date Oct 18, 2007
    • Hideaki Tanaka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Dynamic pressure bearing unit
    • Publication number 20070196035
    • Publication date Aug 23, 2007
    • Katsuo Shibahara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid bearing device
    • Publication number 20070177830
    • Publication date Aug 2, 2007
    • NTN Corporation
    • Fuminori Satoji
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid bearing device
    • Publication number 20070172160
    • Publication date Jul 26, 2007
    • NTN Corporation
    • Fuminori Satoji
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Dynamic bearing device
    • Publication number 20070104400
    • Publication date May 10, 2007
    • NTN Corporation
    • Kenji Ito
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid bearing device
    • Publication number 20070092170
    • Publication date Apr 26, 2007
    • Fuminori Satoji
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid bearing device
    • Publication number 20040264817
    • Publication date Dec 30, 2004
    • Fuminori Satoji
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Dynamic bearing device, producing method thereof, and motor using t...
    • Publication number 20040145260
    • Publication date Jul 29, 2004
    • Takehito Tamaoka
    • G11 - INFORMATION STORAGE