TREA

Yoshio Onodera

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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of producing piston ring
    • Patent number 5,433,001
    • Issue date Jul 18, 1995
    • Nippon Piston Ring Co., Ltd.
    • Takeshi Tsuchiya
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Piston ring
    • Patent number 5,405,154
    • Issue date Apr 11, 1995
    • Nippon Piston Ring Co., Ltd.
    • Takeshi Tsuchiya
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Piston ring and process for manufacturing the same
    • Patent number 5,292,381
    • Issue date Mar 8, 1994
    • Nippon Piston Ring Co., Ltd.
    • Takeshi Tsuchiya
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR