Hans-Walter Birnkraut

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Oberhausen, DT

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Patents Grantslast 30 patents

Information Patent Grant
Method for the preparation of 1,3-diamino-2,2-dimethyl propane
- Patent number 4,078,003
- Issue date Mar 7, 1978
- Ruhrchemie Aktiengesellschaft
- Hans Feichtinger
Information Patent Grant
4,4'-Thio-bis-(dialkylphenol)/formaldehyde condensates and process...
- Patent number 4,072,659
- Issue date Feb 7, 1978
- Ruhrchemie AG
- Hans Feichtinger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for adhesive bonding and coating
- Patent number 4,032,692
- Issue date Jun 28, 1977
- Ruhrchemie Aktiengesellschaft
- Hans-Walter Birnkraut
- B32 - LAYERED PRODUCTS
Information Patent Grant
Chromium-containing catalyst systems and their use for the polymeri...
- Patent number 4,013,822
- Issue date Mar 22, 1977
- Ruhrchemie Aktiengesellschaft
- Hans Feichtinger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for adhesive bonding and coating
- Patent number 3,971,690
- Issue date Jul 27, 1976
- Ruhrchemie Aktiengesellschaft
- Hans-Walter Birnkraut
- B32 - LAYERED PRODUCTS