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Hisashi Hayakawa

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  • Iwata, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic auto-tensioner
    • Patent number 9,046,176
    • Issue date Jun 2, 2015
    • NTN Corporation
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Chain tensioner
    • Patent number 8,393,987
    • Issue date Mar 12, 2013
    • NTN Corporation
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Chain tensioner for two-wheeled vehicle engine
    • Patent number 7,775,923
    • Issue date Aug 17, 2010
    • NTN Corporation
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Chain tensioner
    • Patent number 7,775,921
    • Issue date Aug 17, 2010
    • NTN Corporation
    • Tomoyoshi Izutsu
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Chain tensioner
    • Patent number 7,677,999
    • Issue date Mar 16, 2010
    • NTN Corporation
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Chain tensioner
    • Patent number 7,559,863
    • Issue date Jul 14, 2009
    • NTN Corporation
    • Kouichi Onimaru
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Chain tensioner
    • Patent number 7,527,572
    • Issue date May 5, 2009
    • NTN Corporation
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydraulic tensioner
    • Patent number 7,037,229
    • Issue date May 2, 2006
    • NTN Corporation
    • Hisashi Hayakawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Chain tensioner
    • Patent number 6,935,978
    • Issue date Aug 30, 2005
    • NTN Corporation
    • Hisashi Hayakawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Compact hydraulic autotensioner with return spring mounted around a...
    • Patent number 5,632,474
    • Issue date May 27, 1997
    • NTN Corporation
    • Hisashi Hayakawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Autotensioner
    • Patent number 5,607,368
    • Issue date Mar 4, 1997
    • NTN Corporation
    • Yoshikazu Hida
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Hydraulic autotensioner
    • Patent number 5,482,262
    • Issue date Jan 9, 1996
    • NTN Corporation
    • Hisashi Hayakawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydraulic autotensioner
    • Patent number 4,986,796
    • Issue date Jan 22, 1991
    • NTN Corporation
    • Kazuki Kawashima
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Autotensioner
    • Patent number 4,950,209
    • Issue date Aug 21, 1990
    • NTN Toyo Bearing Co., Ltd.
    • Kazuki Kawashima
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Autotensioner for adjusting the tension of a timing belt
    • Patent number 4,940,447
    • Issue date Jul 10, 1990
    • NTN Toyo Bearing Co., Ltd.
    • Kazuki Kawashima
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Belt autotensioner
    • Patent number 4,904,230
    • Issue date Feb 27, 1990
    • NTN Toyo Bearing Co., Ltd.
    • Kazuki Kawashima
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    HYDRAULIC AUTO-TENSIONER
    • Publication number 20130269514
    • Publication date Oct 17, 2013
    • NTN Corporation
    • Seiji SATO
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    HYDRAULIC AUTO-TENSIONER
    • Publication number 20130260931
    • Publication date Oct 3, 2013
    • NTN Corporation
    • Seiji SATO
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    CHAIN TENSIONER
    • Publication number 20100099529
    • Publication date Apr 22, 2010
    • Seiji SATO
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    CHAIN TENSIONER
    • Publication number 20100087285
    • Publication date Apr 8, 2010
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Chain Tensioner
    • Publication number 20080280711
    • Publication date Nov 13, 2008
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Chain tensioner
    • Publication number 20080261736
    • Publication date Oct 23, 2008
    • Kouichi Onimaru
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Chain tensioner
    • Publication number 20080096707
    • Publication date Apr 24, 2008
    • NTN CORPORATION
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Chain tensioner
    • Publication number 20060116229
    • Publication date Jun 1, 2006
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Chain tensioner
    • Publication number 20060094548
    • Publication date May 4, 2006
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Chain tensioner for two-wheeled vehicle engine
    • Publication number 20060003859
    • Publication date Jan 5, 2006
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Chain tensioner
    • Publication number 20050049093
    • Publication date Mar 3, 2005
    • Seiji Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Chain tensioner
    • Publication number 20040266571
    • Publication date Dec 30, 2004
    • Tomoyoshi Izutsu
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Chain tensioner
    • Publication number 20040138018
    • Publication date Jul 15, 2004
    • Hisashi Hayakawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Hydraulic tensioner
    • Publication number 20040087399
    • Publication date May 6, 2004
    • Hisashi Hayakawa
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES