TREA

Kazuo Ohkoshi

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method and an apparatus for manufacturing a metallic bellows
    • Patent number 4,996,857
    • Issue date Mar 5, 1991
    • NHK Spring Co., Ltd.
    • Kenichi Kageyama
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Coil-spring winding apparatus
    • Patent number 4,715,202
    • Issue date Dec 29, 1987
    • NHK Spring Co. Ltd.
    • Masaharu Shibata
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...