Wilhelm Risse

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Marburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Block copolymers of optionally substituted poly(oxy-1,4-phenylene)...
- Patent number 4,769,423
- Issue date Sep 6, 1988
- Bayer Aktiengesellschaft
- Wilhelm Risse
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of bifunctional polyphenylene oxide
- Patent number 4,677,185
- Issue date Jun 30, 1987
- Bayer Aktiengesellschaft
- Walter Heitz
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of bifunctional polyphenylene ethers
- Patent number 4,521,584
- Issue date Jun 4, 1985
- Bayer Aktiengesellschaft
- Walter Heitz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of bifunctional polyphenylene ethers
- Patent number 4,487,918
- Issue date Dec 11, 1984
- Bayer Aktiengesellschaft
- Walter Heitz
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...