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Keiun Ko

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Patents Grantslast 30 patents

  • Information Patent Grant

    Resin composition containing polyphenylene oxide
    • Patent number 4,228,258
    • Issue date Oct 14, 1980
    • Mitsubishi Gas Chemical Company, Inc.
    • Akitoshi Sugio
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Resin composition containing polyphenylene oxide
    • Patent number 4,153,644
    • Issue date May 8, 1979
    • Mitsubishi Gas Chemical Company, Inc.
    • Akitoshi Sugio
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...