Klaus Bergrath

Follow

Person

Oberhausen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for preparing sulfonated arylphosphines
- Patent number 7,102,034
- Issue date Sep 5, 2006
- Celanese Chemicals Europe GmbH
- Michael Riedel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing sulfonated arylphosphines
- Patent number 6,864,387
- Issue date Mar 8, 2005
- Celanese Chemicals Europe GmbH
- Michael Riedel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing cyclohexanedicarboxylic esters
- Patent number 6,740,773
- Issue date May 25, 2004
- Celanese Chemicals Europe GmbH
- Hans Bohnen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing sulfonated aryl phosphines
- Patent number 6,610,881
- Issue date Aug 26, 2003
- Celanese Chemicals Europe
- Michael Riedel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of stabilizing aldehydes
- Patent number 6,137,013
- Issue date Oct 24, 2000
- Celanese GmbH
- Michael Riedel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of sulfonated arylphosphines
- Patent number 5,451,698
- Issue date Sep 19, 1995
- Hoechst Aktiengesellschaft
- Helmut Bahrmann
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Process for preparing sulfonated arylphosphines
- Publication number 20060276669
- Publication date Dec 7, 2006
- Celanese Chemicals Europe GmbH
- Michael Riedel
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for preparing sulfonated arylphosphines
- Publication number 20050171377
- Publication date Aug 4, 2005
- Celanese Chemicals Europe GmbH
- Michael Riedel
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for preparing sulfonated arylphosphines
- Publication number 20040019236
- Publication date Jan 29, 2004
- Celanese Chemicals Europe GmbH
- Michael Riedel
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for preparing cyclohexanedicarboxylic esters
- Publication number 20030009051
- Publication date Jan 9, 2003
- Hans Bohnen
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Citric esters and a process for their preparation
- Publication number 20020198402
- Publication date Dec 26, 2002
- Hans Bohnen
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for producing esters of citric acids
- Publication number 20020111508
- Publication date Aug 15, 2002
- Klaus Bergrath
- C07 - ORGANIC CHEMISTRY