Stefan Wershofen

Person

Monchengladbach, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for preparing di- and polyamines of the diphenyl methane se...
- Patent number 11,542,223
- Issue date Jan 3, 2023
- Covestro LLC
- Richard Adamson
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Heterogeneous catalysts for the synthesis of carbamates
- Patent number 11,406,964
- Issue date Aug 9, 2022
- Covestro Intellectual Property GmbH & Co. KG
- Stefan Wershofen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for producing methylene-diphenylene-diisocyanates and polyme...
- Patent number 10,947,187
- Issue date Mar 16, 2021
- Covestro Intellectual Property GmbH & Co. KG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing isocyanates
- Patent number 10,858,310
- Issue date Dec 8, 2020
- COVERSTRO DEUTSCHLAND AG
- Daniela Cozzula
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Silica-based zinc catalysts, their preparation and use in the alkox...
- Patent number 10,807,084
- Issue date Oct 20, 2020
- Covestro Deutschland AG
- Stefan Wershofen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for the preparation of di- and polyamines of the diphenylme...
- Patent number 10,759,736
- Issue date Sep 1, 2020
- Covestro Deutschland AG
- Stefan Wershofen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparation of di- and polyamines of the diphenylmethan...
- Patent number 10,689,323
- Issue date Jun 23, 2020
- Covestro Intellectual Property GmbH & Co. KG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparation of di- and polyamines of the diphenylmethan...
- Patent number 10,689,322
- Issue date Jun 23, 2020
- Covestro Deutschland AG
- Thomas Knauf
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method of producing diamines and polyamines of the diphenylmethane...
- Patent number 10,640,455
- Issue date May 5, 2020
- Covestro Deutschland AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of producing diamines and polyamines of the diphenylmethane...
- Patent number 10,640,453
- Issue date May 5, 2020
- Covestro Deutschland AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of producing diamines and polyamines of the diphenylmethane...
- Patent number 10,633,327
- Issue date Apr 28, 2020
- Covestro Duetschland AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing a composition comprising polycarbodiimide havi...
- Patent number 10,633,476
- Issue date Apr 28, 2020
- Covestro Deutschland AG
- Hans-Detlef Arntz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of producing diamines and polyamines of the diphenylmethane...
- Patent number 10,626,078
- Issue date Apr 21, 2020
- Covestro Deutschland AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Methods for producing chemical products with operation interruptions
- Patent number 10,513,487
- Issue date Dec 24, 2019
- Covestro Deutschland AG
- Thomas Knauf
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for producing isocyanates
- Patent number 10,280,135
- Issue date May 7, 2019
- Covestro Deutschland AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of di- and polyamines of the diphenylmet...
- Patent number 10,239,984
- Issue date Mar 26, 2019
- Covestro Deutschland AG
- Jürgen Arras
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparation of di- and polyamines of the diphenylmethan...
- Patent number 10,125,090
- Issue date Nov 13, 2018
- Covestro Deutschland AG
- Thomas Knauf
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for preparation of di- and polyamines of the diphenylmethan...
- Patent number 10,125,091
- Issue date Nov 13, 2018
- Covestro Deutschland AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Zinc cluster compounds and their use as catalysts in the reaction o...
- Patent number 9,988,344
- Issue date Jun 5, 2018
- Covestro Deutschland AG
- Thorsten Dreier
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of di- and polyamines from the diphenyl...
- Patent number 9,815,769
- Issue date Nov 14, 2017
- Covestro Deutschland AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing diamines and polyamines of the diphenylmethan...
- Patent number 9,701,617
- Issue date Jul 11, 2017
- Covestro Deutschland AG
- Stefan Wershofen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing isocyanates
- Patent number 9,695,115
- Issue date Jul 4, 2017
- Covestro Deutschland AG
- Rainer Bruns
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing isocyanates
- Patent number 9,593,075
- Issue date Mar 14, 2017
- Covestro Deutschland AG
- Rainer Bruns
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of urethanes
- Patent number 9,475,762
- Issue date Oct 25, 2016
- Covestro Deutschland AG
- Andreas Jacob
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of di- and polyamines of the diphenylme...
- Patent number 9,416,094
- Issue date Aug 16, 2016
- Covestro Deutschland AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing isocyanates in the gas phase
- Patent number 9,328,064
- Issue date May 3, 2016
- Bayer MaterialScience AG
- Rainer Bruns
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing diamines and polyamines of the diphenylmethane...
- Patent number 9,309,184
- Issue date Apr 12, 2016
- Covestro Deutschland AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of urethanes
- Patent number 9,284,267
- Issue date Mar 15, 2016
- Bayer MaterialScience AG
- Andreas Jacob
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing light-coloured polyisocyanates
- Patent number 9,279,029
- Issue date Mar 8, 2016
- Bayer Intellectual Property GmbH
- Thomas Ernst Mueller
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing diisocyanates by phosgenating diamine suspensions
- Patent number 9,272,988
- Issue date Mar 1, 2016
- Covestro Deutschland AG
- Jörg Laue
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING DI- AND POLYISOCYANATES OF THE DIPHENYLMETHANE...
- Publication number 20230027482
- Publication date Jan 26, 2023
- COVESTRO DEUTSCHLAND AG
- Stefan Wershofen
- C07 - ORGANIC CHEMISTRY
Information Patent Application
HETEROGENEOUS CATALYSTS FOR THE SYNTHESIS OF CARBAMATES
- Publication number 20210053031
- Publication date Feb 25, 2021
- Covestro Intellectual Property GmbH & Co. KG
- Stefan Wershofen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR PRODUCING ISOCYANATES
- Publication number 20200361856
- Publication date Nov 19, 2020
- COVESTRO DEUTSCHLAND AG
- Daniela Cozzula
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING METHYLENE-DIPHENYLENE-DIISOCYANATES AND POLYME...
- Publication number 20200331848
- Publication date Oct 22, 2020
- Covestro Intellectual Property GmbH & Co. KG
- Thomas Knauf
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
SILICA-BASED ZINC CATALYSTS, THEIR PREPARATION AND USE IN THE ALKOX...
- Publication number 20200147594
- Publication date May 14, 2020
- COVESTRO DEUTSCHLAND AG
- Stefan Wershofen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR THE PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLME...
- Publication number 20200123096
- Publication date Apr 23, 2020
- COVESTRO DEUTSCHLAND AG
- Stefan WERSHOFEN
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD OF PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...
- Publication number 20200115319
- Publication date Apr 16, 2020
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD OF PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...
- Publication number 20200115318
- Publication date Apr 16, 2020
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD OF PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...
- Publication number 20200087244
- Publication date Mar 19, 2020
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD OF PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...
- Publication number 20200087243
- Publication date Mar 19, 2020
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHAN...
- Publication number 20190023647
- Publication date Jan 24, 2019
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR PHASE SEPARATION OR EXTRACTION AND DEVICE SUITABLE THER...
- Publication number 20180304173
- Publication date Oct 25, 2018
- COVESTRO DEUTSCHLAND AG
- Bodo Temme
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING ISOCYANATES
- Publication number 20180265457
- Publication date Sep 20, 2018
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING A COMPOSITION COMPRISING POLYCARBODIIMIDE HAVI...
- Publication number 20180009929
- Publication date Jan 11, 2018
- COVESTRO DEUTSCHLAND AG
- Hans-Detlef Arntz
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR THE PRODUCTION OF DI- AND POLYAMINES OF THE DIPHENYLMET...
- Publication number 20170158798
- Publication date Jun 8, 2017
- COVESTRO DEUTSCHLAND AG
- Jürgen Arras
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHODS FOR PRODUCING CHEMICAL PRODUCTS WITH OPERATION INTERRUPTIONS
- Publication number 20170152210
- Publication date Jun 1, 2017
- Covestro Deutschland AG
- Thomas KNAUF
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHAN...
- Publication number 20170137367
- Publication date May 18, 2017
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHAN...
- Publication number 20170114000
- Publication date Apr 27, 2017
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHAN...
- Publication number 20170107171
- Publication date Apr 20, 2017
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING ISOCYANATES
- Publication number 20160376228
- Publication date Dec 29, 2016
- COVESTRO DEUTSCHLAND AG
- Rainer Bruns
- C07 - ORGANIC CHEMISTRY
Information Patent Application
ZINC CLUSTER COMPOUNDS AND THEIR USE AS CATALYSTS IN THE REACTION O...
- Publication number 20160194277
- Publication date Jul 7, 2016
- COVESTRO DEUTSCHLAND AG
- Thorsten Dreier
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR THE PREPARATION OF URETHANES
- Publication number 20160152559
- Publication date Jun 2, 2016
- COVESTRO DEUTSCHLAND AG
- Andreas Jacob
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR THE PREPARATION OF DI- AND POLYAMINES FROM THE DIPHENYL...
- Publication number 20160068474
- Publication date Mar 10, 2016
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR THE PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLME...
- Publication number 20160068473
- Publication date Mar 10, 2016
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...
- Publication number 20160068475
- Publication date Mar 10, 2016
- COVESTRO DEUTSCHLAND AG
- Thomas Knauf
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR PRODUCING ISOCYANATES IN THE GAS PHASE
- Publication number 20150299111
- Publication date Oct 22, 2015
- Bayer Intellectual Property GmbH
- Rainer Bruns
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING ISOCYANATES
- Publication number 20150291512
- Publication date Oct 15, 2015
- Bayer Intellectual Property GmbH
- Rainer Burns
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING DIISOCYANATES BY PHOSGENATING DIAMINE SUSPENSIONS
- Publication number 20150246873
- Publication date Sep 3, 2015
- Bayer MaterialScience AG
- Jörg Laue
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR PHASE SEPARATION OR EXTRACTION AND DEVICE SUITABLE THER...
- Publication number 20140131275
- Publication date May 15, 2014
- Bayer Intellectual Property GmbH
- Bodo Temme
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR PRODUCING URETHANES
- Publication number 20130303740
- Publication date Nov 14, 2013
- Bayer Intellectual Property GmbH
- Felix Gärtner
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Stefan Wershofen

Person

Patents Grantslast 30 patents

Process for preparing di- and polyamines of the diphenyl methane se...

Heterogeneous catalysts for the synthesis of carbamates

Method for producing methylene-diphenylene-diisocyanates and polyme...

Method for producing isocyanates

Silica-based zinc catalysts, their preparation and use in the alkox...

Process for the preparation of di- and polyamines of the diphenylme...

Process for preparation of di- and polyamines of the diphenylmethan...

Process for preparation of di- and polyamines of the diphenylmethan...

Method of producing diamines and polyamines of the diphenylmethane...

Method of producing diamines and polyamines of the diphenylmethane...

Method of producing diamines and polyamines of the diphenylmethane...

Method for producing a composition comprising polycarbodiimide havi...

Method of producing diamines and polyamines of the diphenylmethane...

Methods for producing chemical products with operation interruptions

Method for producing isocyanates

Process for the production of di- and polyamines of the diphenylmet...

Process for preparation of di- and polyamines of the diphenylmethan...

Process for preparation of di- and polyamines of the diphenylmethan...

Zinc cluster compounds and their use as catalysts in the reaction o...

Process for the preparation of di- and polyamines from the diphenyl...

Process for producing diamines and polyamines of the diphenylmethan...

Method for producing isocyanates

Method for producing isocyanates

Process for the preparation of urethanes

Process for the preparation of di- and polyamines of the diphenylme...

Method for producing isocyanates in the gas phase

Method for producing diamines and polyamines of the diphenylmethane...

Process for the preparation of urethanes

Method for producing light-coloured polyisocyanates

Method for producing diisocyanates by phosgenating diamine suspensions

Patents Applicationslast 30 patents

METHOD FOR PRODUCING DI- AND POLYISOCYANATES OF THE DIPHENYLMETHANE...

HETEROGENEOUS CATALYSTS FOR THE SYNTHESIS OF CARBAMATES

METHOD FOR PRODUCING ISOCYANATES

METHOD FOR PRODUCING METHYLENE-DIPHENYLENE-DIISOCYANATES AND POLYME...

SILICA-BASED ZINC CATALYSTS, THEIR PREPARATION AND USE IN THE ALKOX...

PROCESS FOR THE PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLME...

METHOD OF PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...

METHOD OF PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...

METHOD OF PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...

METHOD OF PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...

PROCESS FOR PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHAN...

PROCESS FOR PHASE SEPARATION OR EXTRACTION AND DEVICE SUITABLE THER...

METHOD FOR PRODUCING ISOCYANATES

METHOD FOR PRODUCING A COMPOSITION COMPRISING POLYCARBODIIMIDE HAVI...

PROCESS FOR THE PRODUCTION OF DI- AND POLYAMINES OF THE DIPHENYLMET...

METHODS FOR PRODUCING CHEMICAL PRODUCTS WITH OPERATION INTERRUPTIONS

PROCESS FOR PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHAN...

PROCESS FOR PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHAN...

PROCESS FOR PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHAN...

METHOD FOR PRODUCING ISOCYANATES

ZINC CLUSTER COMPOUNDS AND THEIR USE AS CATALYSTS IN THE REACTION O...

PROCESS FOR THE PREPARATION OF URETHANES

PROCESS FOR THE PREPARATION OF DI- AND POLYAMINES FROM THE DIPHENYL...

PROCESS FOR THE PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLME...

METHOD FOR PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE...

METHOD FOR PRODUCING ISOCYANATES IN THE GAS PHASE

METHOD FOR PRODUCING ISOCYANATES

METHOD FOR PRODUCING DIISOCYANATES BY PHOSGENATING DIAMINE SUSPENSIONS

PROCESS FOR PHASE SEPARATION OR EXTRACTION AND DEVICE SUITABLE THER...

METHOD FOR PRODUCING URETHANES