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Hisashi Miyakawa

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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for desulfurizing exhaust gas
    • Patent number 6,428,760
    • Issue date Aug 6, 2002
    • Toyo Engineering Corporation
    • Hideyuki Michiki
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Desulfurization process for flue gases
    • Patent number 6,041,272
    • Issue date Mar 21, 2000
    • Toyo Engineering Corporation
    • Hideyuki Michiki
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Method for purifying polymer
    • Patent number 5,237,048
    • Issue date Aug 17, 1993
    • Toyo Engineering Corporation
    • Hisashi Miyakawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Method for producing a foamed resin using a blowing and extracting...
    • Patent number 5,133,913
    • Issue date Jul 28, 1992
    • Toyo Engineering Corporation
    • Hisashi Miyakawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Method for extraction
    • Patent number 5,034,132
    • Issue date Jul 23, 1991
    • Toyo Engineering Corporation
    • Hisashi Miyakawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...