Hein Quast

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Krefeld, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of trimethylolpropane
- Patent number 4,514,578
- Issue date Apr 30, 1985
- Bayer Aktiengesellschaft
- Otto Immel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 2,2-dimethylolalkanals
- Patent number 4,247,485
- Issue date Jan 27, 1981
- Bayer Aktiengesellschaft
- Otto Immel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing diphenylamine in the presence of a boron/fluo...
- Patent number 4,100,195
- Issue date Jul 11, 1978
- Bayer Aktiengesellschaft
- Hans-Michael Fischler
- C07 - ORGANIC CHEMISTRY