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Masao Ishida

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Patents Grantslast 30 patents

  • Information Patent Grant

    Piston device for internal combustion engines
    • Patent number 8,365,696
    • Issue date Feb 5, 2013
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Combination of a piston and a piston ring
    • Patent number 7,963,212
    • Issue date Jun 21, 2011
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Combined oil ring
    • Patent number 6,454,271
    • Issue date Sep 24, 2002
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Antirotation structure for combined oil ring
    • Patent number 5,651,553
    • Issue date Jul 29, 1997
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of manufacturing a side rail of a combined oil ring
    • Patent number 5,469,616
    • Issue date Nov 28, 1995
    • Teikoku Piston Ring Co., Ltd.
    • Satomichi Miyazaki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Nonferrous piston ring with hard surface treatment layer
    • Patent number 5,316,321
    • Issue date May 31, 1994
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Combined oil ring
    • Patent number 5,308,089
    • Issue date May 3, 1994
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method for manufacturing a compression ring
    • Patent number 5,241,748
    • Issue date Sep 7, 1993
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

  • Information Patent Application

    COOLING SYSTEM FOR PISTON OF INTERNAL COMBUSTION ENGINE
    • Publication number 20130139767
    • Publication date Jun 6, 2013
    • Toyota Jidosha Kabushiki Kaisha
    • Takashi Koyama
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    PISTON DEVICE FOR INTERNAL COMBUSTION ENGINES
    • Publication number 20100162987
    • Publication date Jul 1, 2010
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    COMBINATION OF A PISTON AND A PISTON RING
    • Publication number 20090020006
    • Publication date Jan 22, 2009
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Hollow valve for internal combustion engine, and internal combustio...
    • Publication number 20090020082
    • Publication date Jan 22, 2009
    • Takao Suzuki
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    PISTON RING
    • Publication number 20020033579
    • Publication date Mar 21, 2002
    • TEIKOKU PISTON RING CO.LTD
    • MASAO ISHIDA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Combined oil ring
    • Publication number 20010009319
    • Publication date Jul 26, 2001
    • Teikoku Piston Ring Co., Ltd.
    • Masao Ishida
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...