TREA

Guenter Engelhardt

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  • Mannheim, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Purification of indigo
    • Patent number 5,109,137
    • Issue date Apr 28, 1992
    • BASF Aktiengesellschaft
    • Reinhold Kohlhaupt
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Purification of indigo
    • Patent number 5,075,458
    • Issue date Dec 24, 1991
    • BASF Aktiengesellschaft
    • Reinhold Kohlhaupt
    • C07 - ORGANIC CHEMISTRY