Gunter Hammen

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Rommerskirchen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of isocyanates
- Patent number 5,925,783
- Issue date Jul 20, 1999
- Bayer Aktiengesellschaft
- Klaus Jost
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of poly(O-alkylurethanes) of the dipheny...
- Patent number 5,347,034
- Issue date Sep 13, 1994
- Bayer Aktiengesellschaft
- Gunter Hammen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of polyisocyanates
- Patent number 5,043,471
- Issue date Aug 27, 1991
- Bayer Aktiengesellschaft
- Gunter Hammen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Continuous process for thermal splitting of carbamic acid esters
- Patent number 4,692,550
- Issue date Sep 8, 1987
- Bayer Aktiengesellschaft
- Theodor Engbert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cycloaliphatic triisocyanates
- Patent number 4,675,437
- Issue date Jun 23, 1987
- Bayer Aktiengesellschaft
- Hartmut Knofel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Triisocyanates and a process for their preparation
- Patent number 4,603,189
- Issue date Jul 29, 1986
- Bayer Aktiengesellschaft
- Hartmut Knofel
- C07 - ORGANIC CHEMISTRY