Jorg Krekel

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Essen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the thermal treatment of iron oxides in a circulating f...
- Patent number 5,837,051
- Issue date Nov 17, 1998
- Bayer AG
- Jorg Krekel
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Process for the thermal treatment of titanium dioxide in a circulat...
- Patent number 5,744,108
- Issue date Apr 28, 1998
- Bayer AG
- Bernd-Michael Holle
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Preparation of anthraquinone from tetrahydroanthraquinone
- Patent number 4,284,576
- Issue date Aug 18, 1981
- Bayer Aktiengesellschaft
- Norbert Schenk
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for isolating propylene glycol diesters in the preparation...
- Patent number 4,159,925
- Issue date Jul 3, 1979
- Bayer Aktiengesellschaft
- Gerd Schreyer
- C07 - ORGANIC CHEMISTRY