Norbert Breitkopf

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Patents Grantslast 30 patents

Information Patent Grant
Process for purifying propanediol-1,3
- Patent number 5,008,473
- Issue date Apr 16, 1991
- Ruhrchemie Aktiengesellschaft
- Norbert Breitkopf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 2,2-dimethylpropanediol-1,3
- Patent number 4,918,247
- Issue date Apr 17, 1990
- Ruhrchemie Aktiengesellschaft
- Norbert Breitkopf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for purifying N,N-dimethylaminopropylamine
- Patent number 4,532,354
- Issue date Jul 30, 1985
- Ruhrchemie Aktiengesellschaft
- Boy Cornils
- C07 - ORGANIC CHEMISTRY