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Masao Fukuwaka

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Patents Grantslast 30 patents

  • Information Patent Grant

    Pulley ball bearing and pulley
    • Patent number 6,692,393
    • Issue date Feb 17, 2004
    • NTN Corporation
    • Masao Fukuwaka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pulley and ball bearing for pulleys
    • Patent number 5,728,020
    • Issue date Mar 17, 1998
    • NTN Corporation
    • Masahiro Muranaka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Idler pulley
    • Patent number 5,725,448
    • Issue date Mar 10, 1998
    • NTN Corporation
    • Yoshio Kato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rolling contact bearing
    • Patent number 5,553,949
    • Issue date Sep 10, 1996
    • NTN Corporation
    • Masao Fukuwaka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Pulley ball bearing and pulley
    • Publication number 20020086754
    • Publication date Jul 4, 2002
    • Masao Fukuwaka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...