Berndt-Ullrich Kohler

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Lauro De Freitas, BR

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Patents Grantslast 30 patents

Information Patent Grant
Preparation and use of iron oxide black pigment granules
- Patent number 5,718,755
- Issue date Feb 17, 1998
- Bayer AG
- Berndt-Ullrich Kohler
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES