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Kiyoyuki Kawai

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Piston ring combination, and internal combustion engine
    • Patent number 12,092,222
    • Issue date Sep 17, 2024
    • TPR CO., LTD.
    • Akira Hikone
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sliding member
    • Patent number 11,867,295
    • Issue date Jan 9, 2024
    • TPR CO., LTD.
    • Tomoyuki Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Cylinder liner for insert casting
    • Patent number 11,141,783
    • Issue date Oct 12, 2021
    • TPR CO., LTD.
    • Yasutomo Tokairin
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    High-toughness coating film and sliding member
    • Patent number 9,416,434
    • Issue date Aug 16, 2016
    • TPR CO., LTD.
    • Kiyoyuki Kawai
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Engine
    • Patent number 7,717,079
    • Issue date May 18, 2010
    • Honda Motor Co., Ltd.
    • Satoshi Yamamura
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

  • Information Patent Application

    Piston Ring Combination, and Internal Combustion Engine
    • Publication number 20240263700
    • Publication date Aug 8, 2024
    • TPR CO., LTD.
    • Akira Hikone
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Sliding Member
    • Publication number 20230392688
    • Publication date Dec 7, 2023
    • TPR CO., LTD.
    • Tomoyuki Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Spiny Liner and Manufacturing Method of Same, and Method of Determi...
    • Publication number 20220307443
    • Publication date Sep 29, 2022
    • TPR Industry Co., Ltd.
    • Akira Sato
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    CAST IRON CYLINDER LINER, AND INTERNAL COMBUSTION ENGINE
    • Publication number 20200256277
    • Publication date Aug 13, 2020
    • TPR CO., LTD.
    • Kiyoyuki KAWAI
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    CAST IRON MATERIAL
    • Publication number 20190144978
    • Publication date May 16, 2019
    • TOYOTA MOTOR EAST JAPAN, INC.
    • Ryo KOIKE
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    HIGH-TOUGHNESS COATING FILM AND SLIDING MEMBER
    • Publication number 20150093586
    • Publication date Apr 2, 2015
    • Kiyoyuki Kawai
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • 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

    Engine
    • Publication number 20080017160
    • Publication date Jan 24, 2008
    • HONDA MOTOR CO., LTD.
    • Satoshi Yamamura
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    Piston ring for internal combustion engines
    • Publication number 20080007006
    • Publication date Jan 10, 2008
    • Teikoku Piston Ring Co., Ltd.
    • Kiyoyuki Kawai
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...