TREA

Tsutomu Kimura

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  • Saitama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Two-piece type oil ring assembly
    • Patent number 5,052,698
    • Issue date Oct 1, 1991
    • Nippon Piston Ring Co., Ltd.
    • Tsutomu Kimura
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Nitrided piston ring with outer layer on surface
    • Patent number 4,557,492
    • Issue date Dec 10, 1985
    • Nippon Piston Ring Co., Ltd.
    • Takeshi Tsuchiya
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...