TREA

Naoki Umeda

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  • Susono-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Piston ring
    • Patent number 12,292,118
    • Issue date May 6, 2025
    • TPR CO., LTD.
    • Yushi Abe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Oil control ring
    • Patent number 12,173,799
    • Issue date Dec 24, 2024
    • TPR CO., LTD.
    • Akira Hikone
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Cylinder liner and cylinder bore
    • Patent number 11,680,537
    • Issue date Jun 20, 2023
    • TPR CO., LTD.
    • Masayuki Ohira
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

  • Information Patent Application

    Piston Ring
    • Publication number 20250116331
    • Publication date Apr 10, 2025
    • TPR CO., LTD.
    • Yushi Abe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    OIL CONTROL RING
    • Publication number 20240141993
    • Publication date May 2, 2024
    • TPR CO., LTD.
    • Akira HIKONE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Cylinder Liner and Cylinder Bore
    • Publication number 20220372929
    • Publication date Nov 24, 2022
    • TPR CO., LTD.
    • Masayuki Ohira
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • 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