TREA

Kiyoshi Yamamoto

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  • Chiba, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sintered alloy for valve seat
    • Patent number 4,505,988
    • Issue date Mar 19, 1985
    • Honda Piston Ring Co., Ltd.
    • Shigeru Urano
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Cylinder liner
    • Patent number 4,467,169
    • Issue date Aug 21, 1984
    • Nippon Piston Ring Co., Ltd.
    • Takeshi Hiraoka
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Cylinder liner
    • Patent number 4,447,275
    • Issue date May 8, 1984
    • Nippon Piston Ring Co., Ltd.
    • Takeshi Hiraoka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS