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SHIGEKI UMEZAWA

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Patents Grantslast 30 patents

  • Information Patent Grant

    Friction plate for wet-type multiplate clutch
    • Patent number 7,392,891
    • Issue date Jul 1, 2008
    • NSK-Warner K.K.
    • Yoshio Kinoshita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Lockup clutch assembly
    • Patent number 7,322,453
    • Issue date Jan 29, 2008
    • NSK-Warner K.K.
    • Yoshio Kinoshita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Wet friction material and manufacturing method therefor
    • Patent number 6,780,283
    • Issue date Aug 24, 2004
    • NSK-Warner Kabushiki Kaisha
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Band braking device, and method of manufacturing annular brake band
    • Patent number 6,758,311
    • Issue date Jul 6, 2004
    • NSK-Warner K.K.
    • Kazuyuki Fujita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Wet friction material and manufacturing method therefor
    • Patent number 6,544,632
    • Issue date Apr 8, 2003
    • NSK-Warner Kabushiki Kaisha
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Wet friction material and process for producing the same
    • Patent number 6,331,358
    • Issue date Dec 18, 2001
    • NSK-Warner Kabushiki Kaisha
    • Shun Kitahara
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Wet type multiplate clutch
    • Patent number 6,283,265
    • Issue date Sep 4, 2001
    • NSK-Warner K.K.
    • Tsuyoshi Hirayanagi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Wet friction material
    • Patent number 6,130,177
    • Issue date Oct 10, 2000
    • NSK Warner Kabushiki Kaisha
    • Shun Kitahara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Friction plate
    • Patent number 6,062,367
    • Issue date May 16, 2000
    • NSK Warner Kabushiki Kaisha
    • Tsuyoshi Hirayanagi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of producing wet friction material and wet frictional material
    • Patent number 6,060,536
    • Issue date May 9, 2000
    • NSK Warner Kabushiki Kaisha
    • Takayuki Matsumoto
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Lining for brake band
    • Patent number 5,975,253
    • Issue date Nov 2, 1999
    • NSK-Warner Kabushiki Kaisha
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Lockup clutch for torque converter
    • Patent number 5,890,572
    • Issue date Apr 6, 1999
    • NSK Warner Kabushiki Kaisha
    • Tsuyoshi Hirayanagi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Torque converter with a lock-up mechanism
    • Patent number 5,865,283
    • Issue date Feb 2, 1999
    • NSK-Warner K.K.
    • Tsuyoshi Hirayanagi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of producing wet frictional plate
    • Patent number 5,730,259
    • Issue date Mar 24, 1998
    • NSK Warner Kabushiki Kaisha
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Wet multidisk friction clutch and fabrication process thereof
    • Patent number 5,647,466
    • Issue date Jul 15, 1997
    • NSK-Warner K.K.
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Brake band
    • Patent number 5,582,274
    • Issue date Dec 10, 1996
    • NSK-Warner K.K.
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Wet frictional material
    • Patent number 5,563,196
    • Issue date Oct 8, 1996
    • NSK Warner Kabushiki Kaisha
    • Shun Kitahara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Brake band
    • Patent number 5,467,849
    • Issue date Nov 21, 1995
    • NSK-Warner K.K.
    • Hirofumi Nakagomi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Frictional engagement apparatus
    • Patent number 5,452,784
    • Issue date Sep 26, 1995
    • NSK - Waner Kabushiki Kaisha
    • Tatsuro Miyoshi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Wet-type multi-plate frictional engagement apparatus
    • Patent number 5,439,087
    • Issue date Aug 8, 1995
    • NSK-Warner K.K.
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Wet frictional material containing activated carbon fiber
    • Patent number 5,395,864
    • Issue date Mar 7, 1995
    • Nsk-Waner Kabushiki Kaisha
    • Tatsuro Miyoshi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Lock-up clutch for a torque converter
    • Patent number 5,248,016
    • Issue date Sep 28, 1993
    • NSK-Warner K.K.
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Brake band
    • Patent number 5,135,082
    • Issue date Aug 4, 1992
    • NSK-Warner K.K.
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Lock-up clutch device
    • Publication number 20060151274
    • Publication date Jul 13, 2006
    • NSK-WARNER KABUSHIKI KAISHA
    • Yoshio Kinoshita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Wet type friction plate
    • Publication number 20060131125
    • Publication date Jun 22, 2006
    • NSK-Warner K.K.
    • Yoshio Kinoshita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Lockup clutch assembly
    • Publication number 20060124419
    • Publication date Jun 15, 2006
    • NSK-Warner K.K.
    • Yoshio Kinoshita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Friction plate for wet-type multiplate clutch
    • Publication number 20060102443
    • Publication date May 18, 2006
    • NSK-Warner K.K.
    • Yoshio Kinoshita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Wet type friction plate and method of producing the wet type fricti...
    • Publication number 20060090980
    • Publication date May 4, 2006
    • NSK-Warner K.K.
    • Yoshio Kinoshita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Band braking device, and method of manufacturing annular brake band
    • Publication number 20030188934
    • Publication date Oct 9, 2003
    • NSK-Warner K.K.
    • Kazuyuki Fujita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Wet friction material and manufacturing method therefor
    • Publication number 20030118830
    • Publication date Jun 26, 2003
    • NSK-WARNER KABUSHIKI KAISHI
    • Shigeki Umezawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    WET FRICTION MATERIAL AND MANUFACTURING METHOD THEREFOR
    • Publication number 20020045393
    • Publication date Apr 18, 2002
    • SHIGEKI UMEZAWA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Band braking device, and method of manufacturing annular brake band
    • Publication number 20010008196
    • Publication date Jul 19, 2001
    • Kazuyuki Fujita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...