Hartmut Nefzger

Person

Pulheim, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Polycarbonate polyols, polyisocyanate prepolymers and polyurethane...
- Patent number 11,926,701
- Issue date Mar 12, 2024
- Covestro Deutschland AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Flame-retardant polyurethane rigid foams
- Patent number 11,434,321
- Issue date Sep 6, 2022
- Covestro Deutschland AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Flame-retarded rigid polyurethane foams
- Patent number 11,352,462
- Issue date Jun 7, 2022
- Covestro Deutschland AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane foams based on polyethercarbonate polyols
- Patent number 11,345,775
- Issue date May 31, 2022
- Covestro Deutschland AG
- Bert Klesczewski
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
PUR/PIR rigid foams made of polyaddition oligoesters
- Patent number 10,982,039
- Issue date Apr 20, 2021
- Covestro Deutschland AG
- Hartmut Nefzger
- B32 - LAYERED PRODUCTS
Information Patent Grant
Polyurethane foams based on polyethercarbonate polyols
- Patent number 10,907,007
- Issue date Feb 2, 2021
- Covestro Intellectual Property GmbH & Co. KG
- Persefoni Hilken
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing polyether carbonate polyols
- Patent number 10,836,858
- Issue date Nov 17, 2020
- Covestro Deutschland AG
- Jörg Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing polyether carbonate polyols
- Patent number 10,662,314
- Issue date May 26, 2020
- Covestro Deutschland AG
- Kai Laemmerhold
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurea systems, processes for preparing the same and use thereof...
- Patent number 10,633,481
- Issue date Apr 28, 2020
- Adhesys Medical GmbH
- Heike Heckroth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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
Rigid PUR/PIR foams of isopropylidenediphenol-based polyethers
- Patent number 10,253,134
- Issue date Apr 9, 2019
- Covestro Deutschland AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing polyether carbonate polyols
- Patent number 10,125,217
- Issue date Nov 13, 2018
- Covestro Deutschland AG
- Jörg Hofmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Hydroxy-aminopolymers and method for producing same
- Patent number 9,994,672
- Issue date Jun 12, 2018
- Covestro Deutschland AG
- Klaus Lorenz
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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
Polyurethane prepreg and composite fiber element produced therefrom
- Patent number 9,920,175
- Issue date Mar 20, 2018
- Covestro Deutschland AG
- Florian Hupka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing polyether carbonate polyols
- Patent number 9,815,965
- Issue date Nov 14, 2017
- Covestro Deutschland AG
- Kai Laemmerhold
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Hydroxy amino polymer and use thereof in polyurea/polyurethane tiss...
- Patent number 9,757,492
- Issue date Sep 12, 2017
- Adhesys Medical GmbH
- Heike Heckroth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Composite elements composed from thermoplastic polymers and polyure...
- Patent number 9,751,279
- Issue date Sep 5, 2017
- Covestro Deutschland AG
- Rolf William Albach
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for preparing optical lenses
- Patent number 9,733,394
- Issue date Aug 15, 2017
- Covestro Deutschland AG
- Dorota Greszta-Franz
- G02 - OPTICS
Information Patent Grant
Polyurea-based fabric glue
- Patent number 9,717,819
- Issue date Aug 1, 2017
- Adhesys Medical GmbH
- Heike Heckroth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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
Polyester polyols with long-chain polyether polyol building blocks...
- Patent number 9,701,805
- Issue date Jul 11, 2017
- Covestro Deutschland AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyester polyols made of isophthalic acid and/or terephthalic acid...
- Patent number 9,605,106
- Issue date Mar 28, 2017
- Covestro Deutschland AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Hydroxy amino polymer and use thereof in polyurea/polyurethane tiss...
- Patent number 9,580,540
- Issue date Feb 28, 2017
- Adhesys Medical GmbH
- Heike Heckroth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Homogeneous extruded articles made from thermoplastically processab...
- Patent number 9,458,277
- Issue date Oct 4, 2016
- Covestro Deutschland AG
- Wolfgang Bräuer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Composite elements composed from thermoplastic polymers and polyure...
- Patent number 9,415,572
- Issue date Aug 16, 2016
- Covestro Deutschland AG
- Rolf Albach
- B32 - LAYERED PRODUCTS
Information Patent Grant
Polyurea-based fabric glue
- Patent number 9,404,026
- Issue date Aug 2, 2016
- Adhesys Medical GmbH
- Heike Heckroth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Lightfast polyurethane composition
- Patent number 9,354,355
- Issue date May 31, 2016
- Covestro Deutschland AG
- Dorota Greszta-Franz
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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-...

Patents Applicationslast 30 patents

Information Patent Application
POLYCARBONATE POLYOLS, POLYISOCYANATE PREPOLYMERS AND POLYURETHANE...
- Publication number 20230098913
- Publication date Mar 30, 2023
- COVESTRO DEUTSCHLAND AG
- Hartmut NEFZGER
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS
- Publication number 20220315698
- Publication date Oct 6, 2022
- COVESTRO DEUTSCHLAND AG
- Joerg Hofman
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
NOVEL URETHANASES FOR THE ENZYMATIC DEGRADATION OF POLYURETHANES
- Publication number 20220282287
- Publication date Sep 8, 2022
- Covestro Intellectual Property GmbH & Co. KG
- Natalie BITTNER
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Application
METHOD FOR PREPARING POLYETHER CARBONATE POLYOLS
- Publication number 20220227928
- Publication date Jul 21, 2022
- Covestro Intellectual Property GmbH & Co. KG
- Kai Laemmerhold
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PRODUCING DIOL
- Publication number 20220112172
- Publication date Apr 14, 2022
- Covestro Intellectual Property GmbH & Co. KG
- Hartmut Nefzger
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PUR-/PIR RIGID FOAMS CONTAINING POLYESTER POLYOLS WITH REDUCED FUNC...
- Publication number 20220025103
- Publication date Jan 27, 2022
- Covestro Intellectual Property GmbH & Co. KG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
NOVEL URETHANASES FOR THE ENZYMATIC DEGRADATION OF POLYURETHANES
- Publication number 20210269834
- Publication date Sep 2, 2021
- Covestro Intellectual Property GmbH & Co. KG
- Natalie BITTNER
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Application
POLYURETHANE HAVING IMPROVED HARDNESS
- Publication number 20210189060
- Publication date Jun 24, 2021
- Covestro Intellectual Property GmbH & Co. KG
- Hans Georg Grablowitz
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PRODUCING POLYOL
- Publication number 20210171426
- Publication date Jun 10, 2021
- Covestro Intellectual Property GmbH & Co. KG
- Hartmut Nefzger
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
POLYURETHANE FOAMS BASED ON POLYETHERCARBONATE POLYOLS
- Publication number 20200407485
- Publication date Dec 31, 2020
- Covestro Intellectual Property GmbH & Co. KG
- Persefoni Hilken
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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
FLAME-RETARDED RIGID POLYURETHANE FOAMS
- Publication number 20200392276
- Publication date Dec 17, 2020
- COVESTRO DEUTSCHLAND AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
FLAME-RETARDANT POLYURETHANE RIGID FOAMS
- Publication number 20200392277
- Publication date Dec 17, 2020
- COVESTRO DEUTSCHLAND AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
VARIABLE DEVICE AND METHOD FOR APPLYING A FOAMABLE REACTION MIXTURE...
- Publication number 20200346378
- Publication date Nov 5, 2020
- COVESTRO DEUTSCHLAND AG
- Hartmut Nefzger
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
IMIDE-CONTAINING POLYESTER
- Publication number 20200299454
- Publication date Sep 24, 2020
- COVESTRO DEUTSCHLAND AG
- Michael Schedler
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYUREA SYSTEMS, PROCESSES FOR PREPARING THE SAME AND USE THEREOF...
- Publication number 20200223973
- Publication date Jul 16, 2020
- Adhesys Medical GmbH
- Heike HECKROTH
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYURETHANE FOAMS BASED ON POLYETHERCARBONATE POLYOLS
- Publication number 20200087438
- Publication date Mar 19, 2020
- COVESTRO DEUTSCHLAND AG
- Persefoni Hilken
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS
- Publication number 20190322801
- Publication date Oct 24, 2019
- COVESTRO DEUTSCHLAND AG
- Jörg HOFMANN
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PUR/PIR RIGID FOAMS MADE OF POLYADDITION OLIGOESTERS
- Publication number 20180334530
- Publication date Nov 22, 2018
- COVESTRO DEUTSCHLAND AG
- Hartmut Nefzger
- B32 - LAYERED PRODUCTS
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
METHOD FOR PRODUCING AMINO-FUNCTIONAL AROMATIC COMPOUNDS
- Publication number 20180305830
- Publication date Oct 25, 2018
- COVESTRO DEUTSCHLAND AG
- Frank RICHTER
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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
RIGID PUR/PIR FOAMS OF ISOPROPYLIDENEDIPHENOL-BASED POLYETHERS
- Publication number 20180171062
- Publication date Jun 21, 2018
- Covestro Deutschland AG
- Hartmut Nefzger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYURETHANE COVERINGS HAVING REDUCED WATER ABSORPTION AND USE THEREOF
- Publication number 20180134836
- Publication date May 17, 2018
- COVESTRO DEUTSCHLAND AG
- Birgit MEYER ZU BERSTENHORST
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS
- Publication number 20180079890
- Publication date Mar 22, 2018
- Covestro Deutschland AG
- Kai Laemmerhold
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING 1,5-DIAMINONAPHTHALENE AND 1-AMINO-5-NITRONAPH...
- Publication number 20170159189
- Publication date Jun 8, 2017
- COVESTRO DEUTSCHLAND AG
- Frank Richter
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
HYDROXY AMINO POLYMER AND USE THEREOF IN POLYUREA/POLYURETHANE TISS...
- Publication number 20170119921
- Publication date May 4, 2017
- Heike Heckroth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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
POLYUREA-BASED FABRIC GLUE
- Publication number 20160303277
- Publication date Oct 20, 2016
- Heike Heckroth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Hartmut Nefzger

Person

Patents Grantslast 30 patents

Polycarbonate polyols, polyisocyanate prepolymers and polyurethane...

Flame-retardant polyurethane rigid foams

Flame-retarded rigid polyurethane foams

Polyurethane foams based on polyethercarbonate polyols

PUR/PIR rigid foams made of polyaddition oligoesters

Polyurethane foams based on polyethercarbonate polyols

Method for producing polyether carbonate polyols

Method for producing polyether carbonate polyols

Polyurea systems, processes for preparing the same and use thereof...

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

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

Rigid PUR/PIR foams of isopropylidenediphenol-based polyethers

Method for producing polyether carbonate polyols

Hydroxy-aminopolymers and method for producing same

Use of urethane alcohols for preparing polyether carbonate polyols

Polyurethane prepreg and composite fiber element produced therefrom

Method for producing polyether carbonate polyols

Hydroxy amino polymer and use thereof in polyurea/polyurethane tiss...

Composite elements composed from thermoplastic polymers and polyure...

Method for preparing optical lenses

Polyurea-based fabric glue

Use of urethane alcohols for preparation of polyether polyols

Polyester polyols with long-chain polyether polyol building blocks...

Polyester polyols made of isophthalic acid and/or terephthalic acid...

Hydroxy amino polymer and use thereof in polyurea/polyurethane tiss...

Homogeneous extruded articles made from thermoplastically processab...

Composite elements composed from thermoplastic polymers and polyure...

Polyurea-based fabric glue

Lightfast polyurethane composition

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

Patents Applicationslast 30 patents

POLYCARBONATE POLYOLS, POLYISOCYANATE PREPOLYMERS AND POLYURETHANE...

METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS

NOVEL URETHANASES FOR THE ENZYMATIC DEGRADATION OF POLYURETHANES

METHOD FOR PREPARING POLYETHER CARBONATE POLYOLS

PROCESS FOR PRODUCING DIOL

PUR-/PIR RIGID FOAMS CONTAINING POLYESTER POLYOLS WITH REDUCED FUNC...

NOVEL URETHANASES FOR THE ENZYMATIC DEGRADATION OF POLYURETHANES

POLYURETHANE HAVING IMPROVED HARDNESS

PROCESS FOR PRODUCING POLYOL

POLYURETHANE FOAMS BASED ON POLYETHERCARBONATE POLYOLS

Flame retardant soft ether foams

FLAME-RETARDED RIGID POLYURETHANE FOAMS

FLAME-RETARDANT POLYURETHANE RIGID FOAMS

VARIABLE DEVICE AND METHOD FOR APPLYING A FOAMABLE REACTION MIXTURE...

IMIDE-CONTAINING POLYESTER

POLYUREA SYSTEMS, PROCESSES FOR PREPARING THE SAME AND USE THEREOF...

POLYURETHANE FOAMS BASED ON POLYETHERCARBONATE POLYOLS

METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS

PUR/PIR RIGID FOAMS MADE OF POLYADDITION OLIGOESTERS

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

METHOD FOR PRODUCING AMINO-FUNCTIONAL AROMATIC COMPOUNDS

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

POLYURETHANE FOAMS BASED ON POLYETHERCARBONATE POLYOLS

RIGID PUR/PIR FOAMS OF ISOPROPYLIDENEDIPHENOL-BASED POLYETHERS

POLYURETHANE COVERINGS HAVING REDUCED WATER ABSORPTION AND USE THEREOF

METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS

METHOD FOR PRODUCING 1,5-DIAMINONAPHTHALENE AND 1-AMINO-5-NITRONAPH...

HYDROXY AMINO POLYMER AND USE THEREOF IN POLYUREA/POLYURETHANE TISS...

USE OF URETHANE ALCOHOLS FOR PREPARING POLYETHER CARBONATE POLYOLS

POLYUREA-BASED FABRIC GLUE