Ben Pan

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Nantong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Preparation of racemic nicotine by reaction of ethyl nicotinate wit...
- Patent number 11,407,730
- Issue date Aug 9, 2022
- Siegfried AG
- Beat Theodor Weber
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Enantiomeric separation of racemic nicotine by addition of an O,O″-...
- Patent number 11,279,685
- Issue date Mar 22, 2022
- Siegfried AG
- Beat Theodor Weber
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of racemic nicotine by reaction of ethyl nicotinate wit...
- Patent number 11,091,458
- Issue date Aug 17, 2021
- Siegfried AG
- Beat Theodor Weber
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of manufacturing 4-chloro-7H-pyrrolo[2,3-D]pyrimidine
- Patent number 10,738,058
- Issue date Aug 11, 2020
- Siegfried (Nantong) Pharmaceuticals Co. Ltd.
- Ben Pan
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PREPARATION OF RACEMIC NICOTINE BY REACTION OF ETHYL NICOTINATE WIT...
- Publication number 20200331884
- Publication date Oct 22, 2020
- Siegfried AG
- Beat Theodor Weber
- C07 - ORGANIC CHEMISTRY
Information Patent Application
ENANTIOMERIC SEPARATION OF RACEMIC NICOTINE BY ADDITION OF AN O,O'-...
- Publication number 20200331883
- Publication date Oct 22, 2020
- Siegfried AG
- Beat Theodor WEBER
- C07 - ORGANIC CHEMISTRY
Information Patent Application
NOVEL METHOD OF MANUFACTURING 4-CHLORO-7H-PYRROLO[2,3-D]PYRIMIDINE
- Publication number 20190169200
- Publication date Jun 6, 2019
- Siegfried (Nantong) Pharmaceuticals Co. Ltd.
- Ben Pan
- C07 - ORGANIC CHEMISTRY