Stephan Kretz

Person

Beibergemund, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of alkyl mercaptans
- Patent number 9,809,535
- Issue date Nov 7, 2017
- Evonik Degussa GmbH
- Benjamin Fonfe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for the production of D,L-methionine
- Patent number 9,206,121
- Issue date Dec 8, 2015
- Evonik Degussa GmbH
- Dieter Buss
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for the production of 2-hydroxy-4-(methylthio)butyronitrile...
- Patent number 9,133,113
- Issue date Sep 15, 2015
- Evonik Degussa GmbH
- Dieter Buss
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing methylmercaptopropionaldehyde
- Patent number 8,759,592
- Issue date Jun 24, 2014
- Evonik Degussa GmbH
- Caspar Heinrich Finkeldei
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for the production of 2-hydroxy-4-(methylthio)butyronitrile...
- Patent number 8,729,288
- Issue date May 20, 2014
- Evonik Degussa GmbH
- Dieter Buss
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing methylmercaptopropionaldehyde
- Patent number 8,624,066
- Issue date Jan 7, 2014
- Evonik Degussa GmbH
- Caspar Heinrich Finkeldei
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Storage-stable 2-hydroxy-4-(methylthio)butyronitrile
- Patent number 8,546,601
- Issue date Oct 1, 2013
- Evonik Degussa GmbH
- Dieter Buss
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing methyl mercaptan
- Patent number 8,008,530
- Issue date Aug 30, 2011
- Evonik Degussa GmbH
- Hubert Redlingshöfer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Reaction vessel and process for its use
- Patent number 7,833,508
- Issue date Nov 16, 2010
- Evonik Degussa GmbH
- Hubert Redlingshöfer
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 6-methylheptanone
- Patent number 6,605,746
- Issue date Aug 12, 2003
- Degussa AG
- Steffen Krill
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of isopropenyl methyl ether
- Patent number 6,566,559
- Issue date May 20, 2003
- Degussa AG
- Steffen Krill
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 3,5,5-trimethylcyclohexa-3-en-1-one...
- Patent number 6,265,617
- Issue date Jul 24, 2001
- Degussa-Hüls Aktiengesellschaft
- Steffen Krill
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process to produce α-tocopherol-acetate
- Patent number 6,239,294
- Issue date May 29, 2001
- Degussa AG
- Steffen Krill
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR THE PREPARATION OF ALKYL MERCAPTANS
- Publication number 20160176808
- Publication date Jun 23, 2016
- EVONIK DEGUSSA GmbH
- Benjamin FONFE
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR THE PRODUCTION OF D,L-METHIONINE
- Publication number 20150197489
- Publication date Jul 16, 2015
- EVONIK DEGUSSA GmbH
- Dieter BUSS
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR THE PRODUCTION OF 2-HYDROXY-4-(METHYLTHIO)BUTYRONITRILE...
- Publication number 20140213819
- Publication date Jul 31, 2014
- EVONIK DEGUSSA GmbH
- Dieter BUSS
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR PREPARING METHYLMERCAPTOPROPIONALDEHYDE
- Publication number 20140051890
- Publication date Feb 20, 2014
- EVONIK DEGUSSA GmbH
- Caspar Heinrich FINKELDEI
- C07 - ORGANIC CHEMISTRY
Information Patent Application
STORAGE-STABLE 2-HYDROXY-4-(METHYLTHIO)BUTYRONITRILE
- Publication number 20120215021
- Publication date Aug 23, 2012
- EVONIK DEGUSSA GmbH
- Dieter Buss
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR THE PRODUCTION OF 2-HYDROXY-4-(METHYLTHIO)BUTYRONITRILE...
- Publication number 20120215022
- Publication date Aug 23, 2012
- EVONIK DEGUSSA GmbH
- Dieter Buss
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR PREPARING METHYLMERCAPTOPROPIONALDEHYDE
- Publication number 20120165573
- Publication date Jun 28, 2012
- EVONIK DEGUSSA GmbH
- Caspar Heinrich FINKELDEI
- C07 - ORGANIC CHEMISTRY
Information Patent Application
REACTION VESSEL AND PROCESS FOR ITS USE
- Publication number 20100015037
- Publication date Jan 21, 2010
- Hurbert Redlingshöfer
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR PREPARING METHYL MERCAPTAN
- Publication number 20090054691
- Publication date Feb 26, 2009
- Hubert Redlingshofer
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for the preparation of 6-methylheptanone
- Publication number 20030040645
- Publication date Feb 27, 2003
- Steffen Krill
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for the production of isopropenyl methyl ether
- Publication number 20020042543
- Publication date Apr 11, 2002
- Steffen Krill
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for the production of alpha-tocopherol acetate by condensat...
- Publication number 20010031881
- Publication date Oct 18, 2001
- Steffen Krill
- C07 - ORGANIC CHEMISTRY

Stephan Kretz

Person

Patents Grantslast 30 patents

Process for the preparation of alkyl mercaptans

Method for the production of D,L-methionine

Method for the production of 2-hydroxy-4-(methylthio)butyronitrile...

Process for preparing methylmercaptopropionaldehyde

Method for the production of 2-hydroxy-4-(methylthio)butyronitrile...

Process for preparing methylmercaptopropionaldehyde

Storage-stable 2-hydroxy-4-(methylthio)butyronitrile

Process for preparing methyl mercaptan

Reaction vessel and process for its use

Process for the preparation of 6-methylheptanone

Process for the production of isopropenyl methyl ether

Process for the preparation of 3,5,5-trimethylcyclohexa-3-en-1-one...

Process to produce &#x03B1;-tocopherol-acetate

Patents Applicationslast 30 patents

PROCESS FOR THE PREPARATION OF ALKYL MERCAPTANS

METHOD FOR THE PRODUCTION OF D,L-METHIONINE

METHOD FOR THE PRODUCTION OF 2-HYDROXY-4-(METHYLTHIO)BUTYRONITRILE...

PROCESS FOR PREPARING METHYLMERCAPTOPROPIONALDEHYDE

STORAGE-STABLE 2-HYDROXY-4-(METHYLTHIO)BUTYRONITRILE

METHOD FOR THE PRODUCTION OF 2-HYDROXY-4-(METHYLTHIO)BUTYRONITRILE...

PROCESS FOR PREPARING METHYLMERCAPTOPROPIONALDEHYDE

REACTION VESSEL AND PROCESS FOR ITS USE

PROCESS FOR PREPARING METHYL MERCAPTAN

Process for the preparation of 6-methylheptanone

Process for the production of isopropenyl methyl ether

Process for the production of alpha-tocopherol acetate by condensat...

Process to produce α-tocopherol-acetate