Helmut Karn

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Ludwigshafen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Preparation of p-nitrophenyl-imidazoles
- Patent number 5,008,398
- Issue date Apr 16, 1991
- BASF Aktiengesellschaft
- Hermann Koehler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of hexaarylbisimidazoles
- Patent number 4,866,183
- Issue date Sep 12, 1989
- BASF Aktiengesellschaft
- Uwe Kempe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 1-alkylimidazoles
- Patent number 4,864,030
- Issue date Sep 5, 1989
- BASF Aktiengesellschaft
- Hermann Koehler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 5-hydroxymethylimidazoles
- Patent number 4,278,801
- Issue date Jul 14, 1981
- BASF Aktiengesellschaft
- Uwe Kempe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 4-methyl-5[(2-aminoethyl)thiomethyl)]-imidazole
- Patent number 4,242,517
- Issue date Dec 30, 1980
- BASF Aktiengesellschaft
- Toni Dockner
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 1-hydroxymethylimidazoles
- Patent number 4,239,895
- Issue date Dec 16, 1980
- BASF Aktiengesellschaft
- Toni Dockner
- C07 - ORGANIC CHEMISTRY