Erich Fretschner

Person

Neckarsteinach, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Method for producing 1 substituted 5-chloro-4 methly pyrazoles
- Patent number 7,002,023
- Issue date Feb 21, 2006
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing 4-amino-5-chloro-1-phenyl pyridazinone-(6)
- Patent number 6,538,135
- Issue date Mar 25, 2003
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing N-substituted 2-pyrazoline-5-one
- Patent number 6,515,139
- Issue date Feb 4, 2003
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for the production of 3-isopropyl-1H-2, 1,3-benzothiadiazine...
- Patent number 6,252,069
- Issue date Jun 26, 2001
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing substituted pyrazoles
- Patent number 6,229,022
- Issue date May 8, 2001
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing solid, free-flowing water-soluble salts of ar...
- Patent number 5,939,584
- Issue date Aug 17, 1999
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of preparing 1,2-dimethyl-3,5-diarylpyrazolium methylsulfates
- Patent number 5,847,154
- Issue date Dec 8, 1998
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing N-substituted pyrazoles
- Patent number 5,840,913
- Issue date Nov 24, 1998
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of optically active 2-halopropionic acids
- Patent number 5,763,659
- Issue date Jun 9, 1998
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 3,5-diarylpyrazoles
- Patent number 5,744,614
- Issue date Apr 28, 1998
- BASF Aktiengesellschaft
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of pyrazole and its derivatives
- Patent number 5,569,769
- Issue date Oct 29, 1996
- BASF Aktiengesellschaft
- Hans R. Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 3-methylpyrazole
- Patent number 5,128,480
- Issue date Jul 7, 1992
- BASF Aktiengesellschaft
- Hans R. Merkle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of pyrazole and its derivatives
- Patent number 4,996,327
- Issue date Feb 26, 1991
- BASF Aktiengesellschaft
- Hans R. Merkle
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Method for producing 1 substituted 5-chloro-4 methly pyrazoles
- Publication number 20040102505
- Publication date May 27, 2004
- Hans Rupert Merkle
- C07 - ORGANIC CHEMISTRY

Erich Fretschner

Person

Patents Grantslast 30 patents

Method for producing 1 substituted 5-chloro-4 methly pyrazoles

Method for producing 4-amino-5-chloro-1-phenyl pyridazinone-(6)

Method for producing N-substituted 2-pyrazoline-5-one

Method for the production of 3-isopropyl-1H-2, 1,3-benzothiadiazine...

Method for producing substituted pyrazoles

Process for preparing solid, free-flowing water-soluble salts of ar...

Method of preparing 1,2-dimethyl-3,5-diarylpyrazolium methylsulfates

Process for preparing N-substituted pyrazoles

Preparation of optically active 2-halopropionic acids

Preparation of 3,5-diarylpyrazoles

Preparation of pyrazole and its derivatives

Preparation of 3-methylpyrazole

Preparation of pyrazole and its derivatives

Patents Applicationslast 30 patents

Method for producing 1 substituted 5-chloro-4 methly pyrazoles