Waldemar Koehler

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Frankenthal, DE

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Patents Grantslast 30 patents

Information Patent Grant
Cleavage of formamide to give hydrocyanic acid and water
- Patent number 4,693,877
- Issue date Sep 15, 1987
- BASF Aktiengesellschaft
- Ubbo v. Oehsen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Multiple-step process for the preparation of hexamethylene diisocya...
- Patent number 4,596,678
- Issue date Jun 24, 1986
- BASF Aktiengesellschaft
- Franz Merger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Separating toluene diisocyanate and/or higher boiling solvents from...
- Patent number 4,289,589
- Issue date Sep 15, 1981
- BASF Aktiengesellschaft
- Waldemar Koehler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Continuous manufacture of organic isocyanates
- Patent number 4,128,569
- Issue date Dec 5, 1978
- BASF Aktiengesellschaft
- Peter Horn
- C07 - ORGANIC CHEMISTRY