Bernd Drapal

Person

Alzenau, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of D,L-methionine
- Patent number 12,195,422
- Issue date Jan 14, 2025
- Evonik Operations GmbH
- Johannes Wefer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing methionine
- Patent number 10,919,848
- Issue date Feb 16, 2021
- Evonik Operations GmbH
- Sebastian Bernhardt
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Process for the preparation of methionine
- Patent number 9,464,045
- Issue date Oct 11, 2016
- Evonik Degussa GmbH
- Martin Koerfer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of methionine
- Patent number 9,156,782
- Issue date Oct 13, 2015
- Evonik Industries AG
- Martin Koerfer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of unsaturated ketones
- Patent number 6,586,635
- Issue date Jul 1, 2003
- Degussa AG
- Nongyuan Shi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of unsaturated 4,5-allene ketones, 3,5-...
- Patent number 6,380,437
- Issue date Apr 30, 2002
- Degussa AG
- Nongyuan Shi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 2,3,5-trimethylhydroquinone diesters
- Patent number 6,103,924
- Issue date Aug 15, 2000
- Degussa-Huls AG
- Nongyuan Shi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for the production of trimethylhydroquinone
- Patent number 6,063,968
- Issue date May 16, 2000
- Degussa Aktiengesellschaft
- Frank Hubner
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR THE PREPARATION OF D,L-METHIONINE
- Publication number 20220306574
- Publication date Sep 29, 2022
- Evonik Operations GmbH
- Johannes WEFER
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for preparing Methionine
- Publication number 20200039928
- Publication date Feb 6, 2020
- Evonik Operations GmbH
- Sebastian Bernhardt
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Application
PROCESS FOR THE PREPARATION OF METHIONINE
- Publication number 20160068480
- Publication date Mar 10, 2016
- Evonik Industries AG
- Martin Koerfer
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR THE PREPARATION OF METHIONINE
- Publication number 20150051421
- Publication date Feb 19, 2015
- Evonik Industries AG
- Martin Koerfer
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for the preparation of unsaturated ketones
- Publication number 20020169342
- Publication date Nov 14, 2002
- Degussa AG
- Nongyuan Shi
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for the preparation of ketones
- Publication number 20020161263
- Publication date Oct 31, 2002
- Degussa AG
- Nongyuan Shi
- C07 - ORGANIC CHEMISTRY

Bernd Drapal

Person

Patents Grantslast 30 patents

Process for the preparation of D,L-methionine

Process for preparing methionine

Process for the preparation of methionine

Process for the preparation of methionine

Process for the preparation of unsaturated ketones

Process for the preparation of unsaturated 4,5-allene ketones, 3,5-...

Process for the preparation of 2,3,5-trimethylhydroquinone diesters

Method for the production of trimethylhydroquinone

Patents Applicationslast 30 patents

PROCESS FOR THE PREPARATION OF D,L-METHIONINE

Process for preparing Methionine

PROCESS FOR THE PREPARATION OF METHIONINE

PROCESS FOR THE PREPARATION OF METHIONINE

Process for the preparation of unsaturated ketones

Process for the preparation of ketones