Bert Klesczewski

Person

Koln, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of polyether polyols
- Patent number 11,130,842
- Issue date Sep 28, 2021
- Covestro Deutschland AG
- Jörg Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Use of alcohols which contain at least two urethane groups for prod...
- Patent number 10,519,276
- Issue date Dec 31, 2019
- Covestro Deutschland AG
- Urs Rauwald
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Use of alcohols containing at least two urethane groups for prepara...
- Patent number 10,487,175
- Issue date Nov 26, 2019
- Covestro Deutschland AG
- Jörg Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane foams based on polyether carbonate polyols
- Patent number 10,233,298
- Issue date Mar 19, 2019
- Covestro Deutschland AG
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Mixtures of polyether carbonate polyols and polyether polyols for p...
- Patent number 10,106,641
- Issue date Oct 23, 2018
- Covestro Deutschland AG
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Use of urethane alcohols for preparing polyether carbonate polyols
- Patent number 9,957,352
- Issue date May 1, 2018
- Covestro Deutschland AG
- Jörg Hofmann
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Use of urethane alcohols for preparation of polyether polyols
- Patent number 9,714,216
- Issue date Jul 25, 2017
- Covestro Deutschland AG
- Jörg Hofmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of polyricinoleic acid ester polyols ha...
- Patent number 9,328,196
- Issue date May 3, 2016
- Bayer MaterialScience AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing polyester polyols having secondary OH end groups
- Patent number 9,193,822
- Issue date Nov 24, 2015
- Bayer MaterialScience AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of a polyurethane polymer with secondar...
- Patent number 9,139,685
- Issue date Sep 22, 2015
- Bayer MaterialScience AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Ballast and process for the production of ballast
- Patent number 8,715,778
- Issue date May 6, 2014
- Bayer MaterialScience AG
- Andreas Hoffmann
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Visco-elastic polyurethane foam with castor oil
- Patent number 8,183,302
- Issue date May 22, 2012
- Bayer MaterialScience AG
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of polyether polyols
- Patent number 6,776,925
- Issue date Aug 17, 2004
- Bayer Aktiengesellschaft
- Jörg Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing polyether polyols
- Patent number 6,670,406
- Issue date Dec 30, 2003
- Bayer Aktiengesellschaft
- Jörg Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Open-cell rigid polyurethane foams
- Patent number 6,444,720
- Issue date Sep 3, 2002
- Bayer Aktiengesellschaft
- Bert Klesczewski
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents

Information Patent Application
Flame retardant soft ether foams
- Publication number 20200407500
- Publication date Dec 31, 2020
- COVESTRO DEUTSCHLAND AG
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR THE PREPARATION OF POLYETHER POLYOLS
- Publication number 20190002634
- Publication date Jan 3, 2019
- COVESTRO DEUTSCHLAND AG
- Jörg Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYURETHANE FOAMS BASED ON POLYETHER CARBONATE POLYOLS
- Publication number 20180327537
- Publication date Nov 15, 2018
- COVESTRO DEUTSCHLAND AG
- Matthäus GOSSNER
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
USE OF ALCOHOLS CONTAINING AT LEAST TWO URETHANE GROUPS FOR PREPARA...
- Publication number 20180312632
- Publication date Nov 1, 2018
- COVESTRO DEUTSCHLAND AG
- Jörg Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
USE OF ALCOHOLS WHICH CONTAIN AT LEAST TWO URETHANE GROUPS FOR PROD...
- Publication number 20180291149
- Publication date Oct 11, 2018
- COVESTRO DEUTSCHLAND AG
- Urs Rauwald
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYURETHANE FOAMS BASED ON POLYETHERCARBONATE POLYOLS
- Publication number 20180273674
- Publication date Sep 27, 2018
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYURETHANE FOAMS BASED ON POLYETHER CARBONATE POLYOLS
- Publication number 20180265623
- Publication date Sep 20, 2018
- COVESTRO DEUTSCHLAND AG
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING FLEXIBLE POLYESTER URETHANE FOAMS WITH INCREAS...
- Publication number 20180223030
- Publication date Aug 9, 2018
- COVESTRO DEUTSCHLAND AG
- Bert KLESCZEWSKI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
VISCOELASTIC FLEXIBLE POLYURETHANE FOAMS BASED ON POLYETHER CARBONA...
- Publication number 20180044464
- Publication date Feb 15, 2018
- COVESTRO DEUTSCHLAND AG
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYURETHANE FOAMS BASED ON POLYETHER CARBONATE POLYOLS
- Publication number 20170044341
- Publication date Feb 16, 2017
- COVESTRO DEUTSCHLAND AG
- BERT KLESCZEWSKI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
USE OF URETHANE ALCOHOLS FOR PREPARING POLYETHER CARBONATE POLYOLS
- Publication number 20160319070
- Publication date Nov 3, 2016
- COVESTRO DEUTSCHLAND AG
- Jörg HOFMANN
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
MIXTURES OF POLYETHER CARBONATE POLYOLS AND POLYETHER POLYOLS FOR P...
- Publication number 20160297919
- Publication date Oct 13, 2016
- COVESTRO DEUTSCHLAND AG
- BERT KLESCZEWSKI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
USE OF URETHANE ALCOHOLS FOR PREPARATION OF POLYETHER POLYOLS
- Publication number 20160264519
- Publication date Sep 15, 2016
- COVESTRO DEUTSCHLAND AG
- Jörg HOFMANN
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAM MATERIALS
- Publication number 20160257776
- Publication date Sep 8, 2016
- COVESTRO DEUTSCHLAND AG
- Gundolf Jacobs
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING SOFT POLYURETHANE FOAM BASED ON POLYESTER POLYOLS
- Publication number 20150299373
- Publication date Oct 22, 2015
- Bayer MaterialScience AG
- Hartmut NEFZGER
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING FLAME-PROTECTED POLYURETHANE FOAMS HAVING LOW...
- Publication number 20150141542
- Publication date May 21, 2015
- Bayer MaterialScience AG
- Sven Meyer-Ahrens
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING POLYETHER ESTER POLYOLS
- Publication number 20140329985
- Publication date Nov 6, 2014
- Klaus Lorenz
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Application
PROCESS FOR THE PREPARATION OF POLYETHER POLYOLS
- Publication number 20140107245
- Publication date Apr 17, 2014
- Bayer Intellectual Property GmbH
- Jörg Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAM MATERIALS
- Publication number 20140066535
- Publication date Mar 6, 2014
- Bayer Intellectual Property GmbH
- Gundolf Jacobs
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAMS
- Publication number 20130345330
- Publication date Dec 26, 2013
- Bayer Intellectual Property GmbH
- Hartmut Nefzger
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR THE PREPARATION OF POLYRICINOLEIC ACID ESTER POLYOLS HA...
- Publication number 20130261205
- Publication date Oct 3, 2013
- Bater Intellectual Property GmbH
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAMS
- Publication number 20130237624
- Publication date Sep 12, 2013
- Bayer Intellectual Property GmbH
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR THE PREPARATION OF A POLYURETHANE POLYMER WITH SECONDAR...
- Publication number 20120123008
- Publication date May 17, 2012
- Bayer MaterialScience AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PRODUCING POLYESTER POLYOLS HAVING SECONDARY OH END GROUPS
- Publication number 20120116114
- Publication date May 10, 2012
- Bayer MaterialScience AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING FLAME-RETARDANT POLYURETHANE FOAM MATERIALS HA...
- Publication number 20120108690
- Publication date May 3, 2012
- Bayer MaterialScience AG
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PRODUCTION OF FLEXIBLE POLYURETHANE FOAMS WITH LOW EMIS...
- Publication number 20100305228
- Publication date Dec 2, 2010
- Bayer MaterialScience AG
- Matthäus Gossner
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
VISCO-ELASTIC POLYURETHANE FOAM WITH CASTOR OIL
- Publication number 20090264547
- Publication date Oct 22, 2009
- Bayer MaterialScience AG
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for producing polyurethane flexible foamed materials having...
- Publication number 20080207791
- Publication date Aug 28, 2008
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for the preparation of PIPA polyols for the production of h...
- Publication number 20080167394
- Publication date Jul 10, 2008
- Bayer MaterialScience AG
- Peter Haas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for the preparation of PIPA polyols
- Publication number 20070238796
- Publication date Oct 11, 2007
- Catherine J. Lovenich
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Bert Klesczewski

Person

Patents Grantslast 30 patents

Process for the preparation of polyether polyols

Use of alcohols which contain at least two urethane groups for prod...

Use of alcohols containing at least two urethane groups for prepara...

Polyurethane foams based on polyether carbonate polyols

Mixtures of polyether carbonate polyols and polyether polyols for p...

Use of urethane alcohols for preparing polyether carbonate polyols

Use of urethane alcohols for preparation of polyether polyols

Process for the preparation of polyricinoleic acid ester polyols ha...

Process for producing polyester polyols having secondary OH end groups

Process for the preparation of a polyurethane polymer with secondar...

Ballast and process for the production of ballast

Visco-elastic polyurethane foam with castor oil

Process for the preparation of polyether polyols

Process for producing polyether polyols

Open-cell rigid polyurethane foams

Patents Applicationslast 30 patents

Flame retardant soft ether foams

PROCESS FOR THE PREPARATION OF POLYETHER POLYOLS

POLYURETHANE FOAMS BASED ON POLYETHER CARBONATE POLYOLS

USE OF ALCOHOLS CONTAINING AT LEAST TWO URETHANE GROUPS FOR PREPARA...

USE OF ALCOHOLS WHICH CONTAIN AT LEAST TWO URETHANE GROUPS FOR PROD...

POLYURETHANE FOAMS BASED ON POLYETHERCARBONATE POLYOLS

POLYURETHANE FOAMS BASED ON POLYETHER CARBONATE POLYOLS

METHOD FOR PRODUCING FLEXIBLE POLYESTER URETHANE FOAMS WITH INCREAS...

VISCOELASTIC FLEXIBLE POLYURETHANE FOAMS BASED ON POLYETHER CARBONA...

POLYURETHANE FOAMS BASED ON POLYETHER CARBONATE POLYOLS

USE OF URETHANE ALCOHOLS FOR PREPARING POLYETHER CARBONATE POLYOLS

MIXTURES OF POLYETHER CARBONATE POLYOLS AND POLYETHER POLYOLS FOR P...

USE OF URETHANE ALCOHOLS FOR PREPARATION OF POLYETHER POLYOLS

METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAM MATERIALS

METHOD FOR PRODUCING SOFT POLYURETHANE FOAM BASED ON POLYESTER POLYOLS

METHOD FOR PRODUCING FLAME-PROTECTED POLYURETHANE FOAMS HAVING LOW...

METHOD FOR PRODUCING POLYETHER ESTER POLYOLS

PROCESS FOR THE PREPARATION OF POLYETHER POLYOLS

METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAM MATERIALS

METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAMS

PROCESS FOR THE PREPARATION OF POLYRICINOLEIC ACID ESTER POLYOLS HA...

METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAMS

PROCESS FOR THE PREPARATION OF A POLYURETHANE POLYMER WITH SECONDAR...

PROCESS FOR PRODUCING POLYESTER POLYOLS HAVING SECONDARY OH END GROUPS

METHOD FOR PRODUCING FLAME-RETARDANT POLYURETHANE FOAM MATERIALS HA...

PROCESS FOR PRODUCTION OF FLEXIBLE POLYURETHANE FOAMS WITH LOW EMIS...

VISCO-ELASTIC POLYURETHANE FOAM WITH CASTOR OIL

Process for producing polyurethane flexible foamed materials having...

Process for the preparation of PIPA polyols for the production of h...

Process for the preparation of PIPA polyols