TREA

Yosiaki Okamoto

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Chain block
    • Patent number 6,224,039
    • Issue date May 1, 2001
    • Elephant Chain Block Co., Ltd.
    • Yosiaki Okamoto
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Wheel cover for chain block
    • Patent number D424269
    • Issue date May 2, 2000
    • Elephant Chain Block Co., Ltd.
    • Tadasu Matusima
    • D34 - Material or article handling equipment
  • Information Patent Grant

    Hand operated chain block having improved hand wheel
    • Patent number 6,032,928
    • Issue date Mar 7, 2000
    • Elephant Chain Block Co., Ltd.
    • Yosiaki Okamoto
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Hand operated chain block having an improved cover
    • Patent number 6,007,054
    • Issue date Dec 28, 1999
    • Elephant Chain Block Co., Ltd.
    • Eikiti Kobayasi
    • B66 - HOISTING LIFTING HAULING