Johann Thenner

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Pohlheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Filler system for a non-flammable rigid foam and use of the rigid f...
- Patent number 4,532,261
- Issue date Jul 30, 1985
- Ruhl; Erich
- Erich Ruhl
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Non-flammable rigid foam and its use as a building material
- Patent number 4,521,543
- Issue date Jun 4, 1985
- Ruhl; Erich
- Erich Ruhl
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Non-flammable rigid foam and its use as a building material
- Patent number 4,463,106
- Issue date Jul 31, 1984
- Ruhl; Erich
- Erich Ruhl
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...