TREA

Isamu Ichizuka

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Compound water-sealing sealant
    • Patent number 5,476,718
    • Issue date Dec 19, 1995
    • Asahi Denka Kogyo Kabushiki Kaisha
    • Isamu Ichizuka
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Water-sealing sheet
    • Patent number 5,444,128
    • Issue date Aug 22, 1995
    • Asahi Denka Kogyo Kabushiki Kaisha
    • Isamu Ichizuka
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Washer with elastic water-swellable rubber
    • Patent number 5,193,960
    • Issue date Mar 16, 1993
    • Asahi Denka Kogyo Kabushiki Kaisha
    • Takuo Fukushima
    • E21 - EARTH DRILLING MINING