TREA

Sadao Kumasaka

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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

    Method of manufacturing a modified polyhydroxy compound
    • Patent number 4,814,515
    • Issue date Mar 21, 1989
    • Human Industry Corporation
    • Sadao Kumasaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • 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

    Apparatus for manufacturing polyurethane foam slabs in a batch
    • Patent number 4,666,393
    • Issue date May 19, 1987
    • Human Industry Corporation
    • Sadao Kumasaka
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • 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-...
  • Information Patent Grant

    Method for manufacturing low density rubber foamed body
    • Patent number 4,596,684
    • Issue date Jun 24, 1986
    • Toyo Rubber Chemical Industrial Corporation
    • Sadao Kumasaka
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method for manufacturing phenolic resin foam
    • Patent number 4,520,141
    • Issue date May 28, 1985
    • Toyo Rubber Chemical Industry Co., Ltd.
    • Sadao Kumasaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for regenerating resin
    • Patent number 4,517,312
    • Issue date May 14, 1985
    • Toyo Rubber Chemical Industry Co., Ltd.
    • Sadao Kumasaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Ball
    • Patent number 4,463,951
    • Issue date Aug 7, 1984
    • Oyo Rubber Chemical Industry Co., Ltd.
    • Sadao Kumasaka
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Mold equipment
    • Patent number 4,352,651
    • Issue date Oct 5, 1982
    • Toyo Rubber Chemical Industrial Corp.
    • Sadao Kumasaka
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method for manufacturing a low density synthetic resin body
    • Patent number 4,338,271
    • Issue date Jul 6, 1982
    • Toyo Rubber Chemical Industrial Corp.
    • Sadao Kumasaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Mold equipment
    • Patent number 4,325,688
    • Issue date Apr 20, 1982
    • Toyo Rubber Chemical Industrial Corporation
    • Sadao Kumasaka
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL