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Ryuichi Hasegawa

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  • Kuwana, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for producing a porous film
    • Patent number 5,073,316
    • Issue date Dec 17, 1991
    • Mitsubishi Kasei Vinyl Company
    • Kunio Bizen
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Polyester
    • Patent number 4,681,975
    • Issue date Jul 21, 1987
    • Mitsubishi Monsanto Chemical Company
    • Ryuichi Hasegawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Polyester containing impure 1,2-butanediol
    • Patent number 4,596,886
    • Issue date Jun 24, 1986
    • Mitsubishi Monsanto Chemical Company
    • Ryuichi Hasegawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...