Wilfried Zecher

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Leverkusen, DT

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Patents Grantslast 30 patents

Information Patent Grant
Melt coating composition and coating process
- Patent number 4,096,291
- Issue date Jun 20, 1978
- Bayer Aktiengesellschaft
- Willi Dunwald
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of polycondensates containing imide groups
- Patent number 4,088,637
- Issue date May 9, 1978
- Bayer Aktiengesellschaft
- Wilfried Zecher
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of polycondensates containing imide groups
- Patent number 4,076,694
- Issue date Feb 28, 1978
- Bayer Aktiengesellschaft
- Wilfried Zecher
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Reaction products containing free isocyanato groups
- Patent number 3,979,421
- Issue date Sep 7, 1976
- Bayer Aktiengesellschaft
- Wilfried Zecher
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of compounds which contain hydantoin gr...
- Patent number 3,966,683
- Issue date Jun 29, 1976
- Bayer Aktiengesellschaft
- Rudolf Merten
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of compounds which contain hydantoin rings
- Patent number 3,939,122
- Issue date Feb 17, 1976
- Bayer Aktiengesellschaft
- Rudolf Merten
- C07 - ORGANIC CHEMISTRY