Wilfried Krix

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Patents Grantslast 30 patents

Information Patent Grant
Manufacture of phthalic anhydride by gas phase oxidation of a mixtu...
- Patent number 4,855,458
- Issue date Aug 8, 1989
- Huls Aktiengesellschaft
- Werner Fuhrmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of utilizing distillation residues of phthalic acid anhydrid...
- Patent number 4,681,046
- Issue date Jul 21, 1987
- Huls Aktiengesellschaft
- Helmut Scharf
- C07 - ORGANIC CHEMISTRY