Christian Lettmann

Person

Essen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine
- Patent number 9,085,506
- Issue date Jul 21, 2015
- Evonik Degussa GmbH
- Markus Galle
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for preparing diamino-dianhydro-dideoxyhexitols, particularl...
- Patent number 9,029,412
- Issue date May 12, 2015
- Evonik Degussa GmbH
- Guido Streukens
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine
- Patent number 8,877,976
- Issue date Nov 4, 2014
- Evonik Degussa GmbH
- Christian Lettmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Low chlorine, multi-staged method for producing cycloaliphatic diso...
- Patent number 8,536,370
- Issue date Sep 17, 2013
- Evonik Degussa GmbH
- Gerda Grund
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing 2,6-dioxabicyclo-(3.3.0)-octane-4,8-dione
- Patent number 8,378,127
- Issue date Feb 19, 2013
- Evonik Degussa GmbH
- Uwe Dingerdissen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for production of trimethylhexamethylenediamine
- Patent number 8,003,826
- Issue date Aug 23, 2011
- Evonik Degussa GmbH
- Christian Lettmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for increasing the selectivity of the hydrogenation of 4,4′...
- Patent number 7,091,384
- Issue date Aug 15, 2006
- Degussa AG
- Bernd Jaeger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Automated method for examining catalytic and spectroscopic properti...
- Patent number 7,052,914
- Issue date May 30, 2006
- hte Aktiengesellschaft the high throughput experimentation company
- Wilhelm Maier
- G01 - MEASURING TESTING
Information Patent Grant
Method for synthesis of aliphatic isocyanates from aromatic isocyan...
- Patent number 6,924,385
- Issue date Aug 2, 2005
- Degussa AG
- Christian Lettmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for hydrogenation of aromatic urethanes in the presence of a...
- Patent number 6,809,215
- Issue date Oct 26, 2004
- Degussa AG
- Norbert Finke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 3-aminomethyl-3,5,5-trimethylcyclohe...
- Patent number 6,437,186
- Issue date Aug 20, 2002
- Degussa AG
- Daniel Ostgard
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR PREPARING 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE
- Publication number 20130261341
- Publication date Oct 3, 2013
- EVONIK DEGUSSA GmbH
- Christian Lettmann
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR PREPARING 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE
- Publication number 20130253226
- Publication date Sep 26, 2013
- EVONIK DEGUSSA GmbH
- Markus Galle
- C07 - ORGANIC CHEMISTRY
Information Patent Application
COMPOSITE FILM AND PACKAGING PRODUCED THEREFROM
- Publication number 20130118128
- Publication date May 16, 2013
- Andreas LUECKE
- B32 - LAYERED PRODUCTS
Information Patent Application
METHOD FOR PREPARING DIAMINO-DIANHYDRO-DIDEOXYHEXITOLS, PARTICULARL...
- Publication number 20130116451
- Publication date May 9, 2013
- EVONIK DEGUSSA GmbH
- Guido Streukens
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING 2,6-DIOXABICYCLO-(3.3.0)-OCTANE-4,8-DIONE
- Publication number 20110269977
- Publication date Nov 3, 2011
- EVONIK DEGUSSA GmbH
- Uwe Dingerdissen
- C07 - ORGANIC CHEMISTRY
Information Patent Application
LOW CHLORINE, MULTI-STAGED METHOD FOR PRODUCING CYCLOALIPHATIC DISO...
- Publication number 20110028755
- Publication date Feb 3, 2011
- EVONIK DEGUSSA GmbH
- Gerda Grund
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCTION OF TRIMETHYLHEXAMETHYLENEDIAMINE
- Publication number 20100094058
- Publication date Apr 15, 2010
- EVONIK DEGUSSA GmbH
- Christian Lettmann
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR PREPARING 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE
- Publication number 20100041921
- Publication date Feb 18, 2010
- EVONIK DEGUSSA GmbH
- Christian Lettmann
- C07 - ORGANIC CHEMISTRY
Information Patent Application
FORMALDEHYDE-FREE, CARBONYL- AND RING-HYDROGENATED KETONE-ALDEHYDE...
- Publication number 20090198024
- Publication date Aug 6, 2009
- EVONIK DEGUSSA GmbH
- Patrick Glockner
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
FORMALDEHYDE-FREE, OH-FUNCTIONAL, CARBONYL- AND RING-HYDROGENATED K...
- Publication number 20090099332
- Publication date Apr 16, 2009
- EVONIK DEGUSSA GmbH
- Patrick Glockner
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PREPARING AMINES BY CONDITIONING THE CATALYST WITH AMMONIA
- Publication number 20090048466
- Publication date Feb 19, 2009
- EVONIK DEGUSSA GmbH
- Christian Lettmann
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CARBONYL HYDROGENATED KETONE ALDEHYDE RESINS, DEVOID OF FORMALDEHYD...
- Publication number 20090012245
- Publication date Jan 8, 2009
- EVONIK DEGUSSA GmbH
- Patrick Glockner
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for increasing the selectivity of the hydrogenation of 4,4'...
- Publication number 20050148797
- Publication date Jul 7, 2005
- Bernd Jaeger
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for hydrogenation of aromatic urethanes in the presence of a...
- Publication number 20040097661
- Publication date May 20, 2004
- Degussa AG
- Norbert Finke
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for synthesis of aliphatic isocyanates from aromatic isocyan...
- Publication number 20040097752
- Publication date May 20, 2004
- Degussa AG
- Christian Lettmann
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR THE PREPARATION OF 3-AMINOMETHYL-3, 5,5-TRIMETHYLCYCLOH...
- Publication number 20020137970
- Publication date Sep 26, 2002
- Daniel Ostgard
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Automated method for examining catalytic and spectroscopic properti...
- Publication number 20020135753
- Publication date Sep 26, 2002
- Wilhelm Maier
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Christian Lettmann

Person

Patents Grantslast 30 patents

Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine

Method for preparing diamino-dianhydro-dideoxyhexitols, particularl...

Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine

Low chlorine, multi-staged method for producing cycloaliphatic diso...

Method for producing 2,6-dioxabicyclo-(3.3.0)-octane-4,8-dione

Method for production of trimethylhexamethylenediamine

Process for increasing the selectivity of the hydrogenation of 4,4′...

Automated method for examining catalytic and spectroscopic properti...

Method for synthesis of aliphatic isocyanates from aromatic isocyan...

Method for hydrogenation of aromatic urethanes in the presence of a...

Process for the preparation of 3-aminomethyl-3,5,5-trimethylcyclohe...

Patents Applicationslast 30 patents

PROCESS FOR PREPARING 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE

PROCESS FOR PREPARING 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE

COMPOSITE FILM AND PACKAGING PRODUCED THEREFROM

METHOD FOR PREPARING DIAMINO-DIANHYDRO-DIDEOXYHEXITOLS, PARTICULARL...

METHOD FOR PRODUCING 2,6-DIOXABICYCLO-(3.3.0)-OCTANE-4,8-DIONE

LOW CHLORINE, MULTI-STAGED METHOD FOR PRODUCING CYCLOALIPHATIC DISO...

METHOD FOR PRODUCTION OF TRIMETHYLHEXAMETHYLENEDIAMINE

PROCESS FOR PREPARING 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE

FORMALDEHYDE-FREE, CARBONYL- AND RING-HYDROGENATED KETONE-ALDEHYDE...

FORMALDEHYDE-FREE, OH-FUNCTIONAL, CARBONYL- AND RING-HYDROGENATED K...

PROCESS FOR PREPARING AMINES BY CONDITIONING THE CATALYST WITH AMMONIA

CARBONYL HYDROGENATED KETONE ALDEHYDE RESINS, DEVOID OF FORMALDEHYD...

Process for increasing the selectivity of the hydrogenation of 4,4'...

Method for hydrogenation of aromatic urethanes in the presence of a...

Method for synthesis of aliphatic isocyanates from aromatic isocyan...

PROCESS FOR THE PREPARATION OF 3-AMINOMETHYL-3, 5,5-TRIMETHYLCYCLOH...

Automated method for examining catalytic and spectroscopic properti...