TREA

Koretoshi Katsuki

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of manufacturing polyurethane foam
    • Patent number 5,079,276
    • Issue date Jan 7, 1992
    • Human Industry Corporation
    • Sadao Kumasaka
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Apparatus for producing polyurethane foam
    • Patent number 4,988,271
    • Issue date Jan 29, 1991
    • Human Industry Corporation
    • Sadao Kumasaka
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Manufacturing method of asphalt foam
    • Patent number 4,810,298
    • Issue date Mar 7, 1989
    • Toyo Chemical Industry Co., Ltd.
    • Sadao Kumasaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Asphalt impregnated foam and method of producing the same
    • Patent number 4,610,922
    • Issue date Sep 9, 1986
    • Human Industry Corporation
    • Sadao Kumasaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...