Erich Hammerschmidt

Person

D 5090 Leverkusen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for preparing piperidines
- Patent number 6,458,954
- Issue date Oct 1, 2002
- Bayer Aktiengesellschaft
- Guido Giffels
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of alkyl aryl ethers containing carboxy...
- Patent number 5,869,735
- Issue date Feb 9, 1999
- Bayer Aktiengesellschaft
- Stefan Antons
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 6-hydroxynaphthalene-1-carboxylic fr...
- Patent number 4,874,892
- Issue date Oct 17, 1989
- Bayer Aktiengesellschaft
- Erich Hammerschmidt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Thermotropic aromatic polymers with high elongation at break, proce...
- Patent number 4,835,243
- Issue date May 30, 1989
- Volker Eckhardt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Thermotropic aromatic polyesters having a high deflection temperatu...
- Patent number 4,806,619
- Issue date Feb 21, 1989
- Bayer Aktiengesellschaft
- Volker Eckhardt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
1-Aminomethylnaphthalene-6-sulphonic acid, its preparation and its use
- Patent number 4,795,596
- Issue date Jan 3, 1989
- Bayer Aktiengesellschaft
- Erich Hammerschmidt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Tetra-alkali metal salts of chromotropic acid, a process for their...
- Patent number 4,705,652
- Issue date Nov 10, 1987
- Bayer Aktiengesellschaft
- Erich Hammerschmidt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 1-amino-2-naphthol-4-sulphonic acid (amidol a...
- Patent number 4,427,601
- Issue date Jan 24, 1984
- Bayer Aktiengesellschaft
- Erich Hammerschmidt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 1-benzoylamino-8-hydroxynaphthalene-...
- Patent number 4,426,333
- Issue date Jan 17, 1984
- Bayer Aktiengesellschaft
- Erich Hammerschmidt
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Process for preparing basic organic nitrogen-containing compounds b...
- Publication number 20020016462
- Publication date Feb 7, 2002
- Johannes Scherer
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for preparing piperidines
- Publication number 20010056186
- Publication date Dec 27, 2001
- Guido Giffels
- C07 - ORGANIC CHEMISTRY

Erich Hammerschmidt

Person

Patents Grantslast 30 patents

Process for preparing piperidines

Process for the preparation of alkyl aryl ethers containing carboxy...

Process for the preparation of 6-hydroxynaphthalene-1-carboxylic fr...

Thermotropic aromatic polymers with high elongation at break, proce...

Thermotropic aromatic polyesters having a high deflection temperatu...

1-Aminomethylnaphthalene-6-sulphonic acid, its preparation and its use

Tetra-alkali metal salts of chromotropic acid, a process for their...

Process for preparing 1-amino-2-naphthol-4-sulphonic acid (amidol a...

Process for the preparation of 1-benzoylamino-8-hydroxynaphthalene-...

Patents Applicationslast 30 patents

Process for preparing basic organic nitrogen-containing compounds b...

Process for preparing piperidines