Herwig Fritsch

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Gladbeck, DE

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Patents Grantslast 30 patents

Information Patent Grant
Preparation for the water-repellent impregnation of porous mineral...
- Patent number 5,091,002
- Issue date Feb 25, 1992
- Th. Goldschmidt AG
- Eckehard Schamberg
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Preparation for making inorganic building materials water-repellent
- Patent number 4,486,476
- Issue date Dec 4, 1984
- Th. Goldschmidt AG
- Herwig Fritsch
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES