Eugen Velker

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Dormagen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of dihydroxypolyurethanes and the use t...
- Patent number 4,240,861
- Issue date Dec 23, 1980
- Bayer Aktiengesellschaft
- Walter Meckel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of polyisocyanate-polyaddition products...
- Patent number 4,119,613
- Issue date Oct 10, 1978
- Bayer Aktiengesellschaft
- Artur Reischl
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...