Gerhard Wiechers

Person

Leverkusen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of toluenediamines by catalytic hydroge...
- Patent number 7,511,176
- Issue date Mar 31, 2009
- Bayer MaterialScience AG
- Fritz Pohl
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of dinitrotoluene
- Patent number 7,495,136
- Issue date Feb 24, 2009
- Bayer MaterialScience AG
- Fritz Pohl
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of dinitrotoluene
- Patent number 6,258,986
- Issue date Jul 10, 2001
- Bayer Aktiengesellschaft
- Uwe Klingler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of nitroaromatic compounds
- Patent number 5,696,305
- Issue date Dec 9, 1997
- Bayer Aktiengesellschaft
- Uwe Klingler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of dinitrotoluene
- Patent number 5,689,018
- Issue date Nov 18, 1997
- Bayer Aktiengesellschaft
- Uwe Klingler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of dinitrotoluene
- Patent number 5,679,873
- Issue date Oct 21, 1997
- Bayer Aktiengesellschaft
- Uwe Klingler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of dinitrotoluene and isomeric mixtures...
- Patent number 5,663,462
- Issue date Sep 2, 1997
- Bayer Aktiengesellschaft
- Uwe Klingler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the polynitration of aromatic compounds
- Patent number 5,616,818
- Issue date Apr 1, 1997
- Bayer Aktiengesellschaft
- Hans-Georg Pirkl
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation and purification of nitroaromatics
- Patent number 5,395,995
- Issue date Mar 7, 1995
- Bayer Aktiengesellschaft
- Dieter Grenner
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of dinitrotoluene
- Patent number 5,345,012
- Issue date Sep 6, 1994
- Bayer Aktiengesellschaft
- Thomas Schieb
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Process for the preparation of toluenediamines by catalytic hydroge...
- Publication number 20080146847
- Publication date Jun 19, 2008
- Bayer MaterialScience AG
- Fritz Pohl
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for the production of dinitrotoluene
- Publication number 20080086017
- Publication date Apr 10, 2008
- Fritz Pohl
- C07 - ORGANIC CHEMISTRY

Gerhard Wiechers

Person

Patents Grantslast 30 patents

Process for the preparation of toluenediamines by catalytic hydroge...

Process for the production of dinitrotoluene

Process for the production of dinitrotoluene

Process for the production of nitroaromatic compounds

Process for the production of dinitrotoluene

Process for the production of dinitrotoluene

Process for the production of dinitrotoluene and isomeric mixtures...

Process for the polynitration of aromatic compounds

Process for the preparation and purification of nitroaromatics

Process for the preparation of dinitrotoluene

Patents Applicationslast 30 patents

Process for the preparation of toluenediamines by catalytic hydroge...

Process for the production of dinitrotoluene