TREA

Gunther Cramn

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  • Cologne, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Polyamines containing amide groups
    • Patent number 4,319,019
    • Issue date Mar 9, 1982
    • Bayer Aktiengesellschaft
    • Wolfgang Lehmann
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE