Ulrich Fechtel

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Ober-Ramstadt, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing L-ascorbic acid
- Patent number 6,573,393
- Issue date Jun 3, 2003
- Merck KGaA
- Ulrich Fechtel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of ascorbic acid
- Patent number 5,744,618
- Issue date Apr 28, 1998
- Merck Patent Gesellschaft mit beschrankter Haftung
- Ulrich Fechtel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for preparing 3-aminopyridines from 3-nitropyridines
- Patent number 5,518,588
- Issue date May 21, 1996
- Merck Patent Gesellschaft mit beschrankter Haftung
- Ulrich Fechtel
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Process for preparing 2-arylbenzimidazole-5-sulfonic acids
- Patent number 5,473,079
- Issue date Dec 5, 1995
- Merck Patent Gesellschaft mit beschrankter Haftung
- Ulrich Heywang
- C07 - ORGANIC CHEMISTRY