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Choichi Asano

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Submerged laser beam irradiation equipment
    • Patent number 5,938,954
    • Issue date Aug 17, 1999
    • Hitachi, Ltd.
    • Tsutomu Onuma
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Boiler tube
    • Patent number 4,505,232
    • Issue date Mar 19, 1985
    • Hitachi, Ltd.
    • Kenichi Usami
    • B32 - LAYERED PRODUCTS