TREA

Sadahito Ishikawa

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of collecting wastes and system therefor
    • Patent number 4,995,765
    • Issue date Feb 26, 1991
    • Shimizu Construction Co., Ltd.
    • Tomoya Tokuhiro
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Waste collection method
    • Patent number 4,993,882
    • Issue date Feb 19, 1991
    • Shimizu Construction Co., Ltd.
    • Sakae Nishizuka
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL