TREA

Edmund M. Choy

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  • Cloquet, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Foaming agent
    • Patent number 4,548,649
    • Issue date Oct 22, 1985
    • Westvaco Corporation
    • Edmund M. Choy
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Internal sizing with black liquid
    • Patent number 4,517,052
    • Issue date May 14, 1985
    • Westvaco Corporation
    • Edmund M. Choy
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE