TREA

Isao Kumagai

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Cation exchange membrane
    • Patent number 4,663,013
    • Issue date May 5, 1987
    • Chlorine Engineers Corp. Ltd.
    • Isao Kumagai
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Electrolytic cell for ion exchange membrane method
    • Patent number 4,417,970
    • Issue date Nov 29, 1983
    • Chlorine Engineers Corp. Ltd.
    • Kenzo Yamaguchi
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR