TREA

Yasuo Utsumi

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rolling bearing and heat treatment method therefor
    • Patent number 6,325,867
    • Issue date Dec 4, 2001
    • NSK Ltd.
    • Shigeru Okita
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Rolling-sliding mechanical member
    • Patent number 5,361,648
    • Issue date Nov 8, 1994
    • NSK Ltd.
    • Yasuo Murakami
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Rolling bearing
    • Patent number 5,352,303
    • Issue date Oct 4, 1994
    • NSK Ltd.
    • Yasuo Murakami
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...