Hans G. Schmelzer

Follow

Person

Pulheim, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Compounds containing hydroxyl groups and urethano-aryl-sulfonic aci...
- Patent number 4,224,418
- Issue date Sep 23, 1980
- Bayer Aktiengesellschaft
- Dieter Dieterich
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Compounds containing hydroxyl groups and urethano-aryl-sulfonic aci...
- Patent number 4,174,434
- Issue date Nov 13, 1979
- Bayer Aktiengesellschaft
- Dieter Dieterich
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of polyisocyanates which contain biuret...
- Patent number 4,147,714
- Issue date Apr 3, 1979
- Bayer Aktiengesellschaft
- Hartmut Hetzel
- C07 - ORGANIC CHEMISTRY