Franz Wirsching

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Iphofen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing calcium sulfate anhydrite
- Patent number 5,169,444
- Issue date Dec 8, 1992
- Gebruder Knauf Westdeutsche Gipswerke KG
- Friedrich-Wilhelm Boos
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Process for the production of dry flue gas gypsum
- Patent number 4,423,016
- Issue date Dec 27, 1983
- Franz Wirsching
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Process for the manufacture of lump calcium sulfate
- Patent number 4,173,610
- Issue date Nov 6, 1979
- Gebr. Knauf Westdeutsche Gipswerke
- Rolf Huller
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES