TREA

Kenji Hosoyama

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric-powered shutter apparatus for a building opening
    • Patent number 5,799,716
    • Issue date Sep 1, 1998
    • Sanwa Shutter Corporation
    • Kenji Yamaguchi
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Adjustable skylight
    • Patent number D328353
    • Issue date Jul 28, 1992
    • Sanwa Shutter Corporation
    • Kenji Yamaguchi
    • D25 - Building units and construction elements
  • Information Patent Grant

    Movable sky light
    • Patent number 5,115,601
    • Issue date May 26, 1992
    • Sanwa Shutter Corporation
    • Kenji Yamaguchi
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES