Johannes E. Schmidt

Person

Ludwigshafen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Preparation of phthalic anhydride from o-xylene
- Patent number 5,225,574
- Issue date Jul 6, 1993
- BASF Aktiengesellschaft
- Heinrich Aichinger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of formic acid
- Patent number 5,206,433
- Issue date Apr 27, 1993
- BASF Aktiengesellschaft
- Heinz Hohenschutz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Obtaining very pure maleic anhydride from crude maleic anhydride
- Patent number 4,961,827
- Issue date Oct 9, 1990
- BASF Aktiengesellschaft
- Dieter Zimmerling
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Obtaining maleic anhydride not prone to discolor
- Patent number 4,921,977
- Issue date May 1, 1990
- BASF Aktiengesellschaft
- Gerhard Michl
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Continuous isolation of phthalic anhydride and maleic anhydride fro...
- Patent number 4,568,427
- Issue date Feb 4, 1986
- BASF Aktiengesellschaft
- Eckehard Danz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of phthalic anhydride
- Patent number 4,369,327
- Issue date Jan 18, 1983
- BASF Aktiengesellschaft
- Dieter Stockburger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of formic acid
- Patent number 4,218,568
- Issue date Aug 19, 1980
- BASF Aktiengesellschaft
- Heinz Hohenschutz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Isolation of formic acid from its aqueous solutions
- Patent number 4,217,460
- Issue date Aug 12, 1980
- BASF Aktiengesellschaft
- Heinz Hohenschutz
- C07 - ORGANIC CHEMISTRY

Johannes E. Schmidt

Person

Patents Grantslast 30 patents

Preparation of phthalic anhydride from o-xylene

Preparation of formic acid

Obtaining very pure maleic anhydride from crude maleic anhydride

Obtaining maleic anhydride not prone to discolor

Continuous isolation of phthalic anhydride and maleic anhydride fro...

Preparation of phthalic anhydride

Preparation of formic acid

Isolation of formic acid from its aqueous solutions