Gerd-Hermann Schulten

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Duisburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Color pure iron oxide pigments, a process for their preparation and...
- Patent number 5,049,195
- Issue date Sep 17, 1991
- Bayer Aktiengesellschaft
- Wilfried Burow
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Oxidation resistant, heat resistant iron oxide black pigments, a pr...
- Patent number 4,919,727
- Issue date Apr 24, 1990
- Bayer Aktiengesellschaft
- Wilfried Burow
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Color pure iron oxide pigments, a process for their preparation
- Patent number 4,911,760
- Issue date Mar 27, 1990
- Bayer Aktiengesellschaft
- Wilfried Burow
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the production of black pigments based on iron
- Patent number 4,701,221
- Issue date Oct 20, 1987
- Bayer Aktiengesellschaft
- Horst Brunn
- C01 - INORGANIC CHEMISTRY