Franz Thonnessen

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Oberhausen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of 2,2-dimethylpropane-1,3-diol
- Patent number 5,072,058
- Issue date Dec 10, 1991
- Hoechst Aktiengesellschaft
- Georg Dambkes
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 3(4),8(9)-bis(aminomethyl)-tricyclo[5.2.1.0.s...
- Patent number 5,041,675
- Issue date Aug 20, 1991
- Hoechst Aktiengesellschaft
- Rainer Lukas
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process on the preparation of 2,2'-oxybis(N,N-dimethyl-ethanamine)
- Patent number 4,940,818
- Issue date Jul 10, 1990
- Hoechst Aktiengesellschaft
- Jurgen Weber
- 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