Wolfgang Alewelt

Person

Krefeld, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Production of polyester carbonates
- Patent number 6,734,278
- Issue date May 11, 2004
- Bayer Aktiengesellschaft
- Silke Kratschmer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Working up of polymer synthesis solutions
- Patent number 6,716,933
- Issue date Apr 6, 2004
- Bayer Aktiengesellschaft
- Wolfgang Alewelt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Continuous process for the production of carboxylic acid diaryl esters
- Patent number 6,680,400
- Issue date Jan 20, 2004
- Bayer Aktiengesellschaft
- Wolfgang Alewelt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production and use of polyester carbonates
- Patent number 6,646,099
- Issue date Nov 11, 2003
- Bayer Aktiengesellschaft
- Silke Kratschmer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Containers made of a branched polycarbonate
- Patent number 6,613,869
- Issue date Sep 2, 2003
- Bayer Aktiengesellschaft
- Klaus Horn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing carbonic acid diaryl ester
- Patent number 6,548,691
- Issue date Apr 15, 2003
- Bayer Aktiengesellscaft
- Wolfgang Alewelt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Improved transesterification process for the production of polycarb...
- Patent number 5,444,148
- Issue date Aug 22, 1995
- Bayer Aktiengesellschaft
- Wolfgang Alewelt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Guanidine-derived catalyts for preparing polycarbonates by transest...
- Patent number 5,418,316
- Issue date May 23, 1995
- Bayer Aktiengesellschaft
- Steffen Kuhling
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Two-stage process for the production of thermoplastic polycarbonate
- Patent number 5,399,659
- Issue date Mar 21, 1995
- Bayer Aktiengesellschaft
- Steffen Kuhling
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of polycarbonates
- Patent number 5,384,389
- Issue date Jan 24, 1995
- Bayer Aktiengesellschaft
- Wolfgang Alewelt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of thermoplastic polycarbonates
- Patent number 5,373,082
- Issue date Dec 13, 1994
- Bayer Aktiengesellschaft
- Hermann Kauth
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of thermoplastic polycarbonates
- Patent number 5,340,905
- Issue date Aug 23, 1994
- Bayer Aktiengesellschaft
- Steffen Kuhling
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for isolating polycarbonates from their solutions with tube...
- Patent number 5,317,083
- Issue date May 31, 1994
- Bayer Aktiengesellschaft
- Dieter Freitag
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Molten, catalytic process for the preparation of polycarbonates
- Patent number 5,314,985
- Issue date May 24, 1994
- Bayer Aktiengesellschaft
- Steffen Kuhling
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of polyarylene sulphides
- Patent number 5,306,805
- Issue date Apr 26, 1994
- Bayer AG
- Wolfgang Arlt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the purification of polyarylene sulphides
- Patent number 5,247,063
- Issue date Sep 21, 1993
- Bayer Aktiengesellschaft
- Wolfgang Alewelt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Continuous production of polycarbonates
- Patent number 5,235,026
- Issue date Aug 10, 1993
- Bayer Aktiengesellschaft
- Claus Wulff
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of solventless polycarbonate
- Patent number 5,191,001
- Issue date Mar 2, 1993
- Bayer Aktiengesellschaft
- Steffen Kuhlig
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the manufacture of polyarylene sulphides
- Patent number 5,066,776
- Issue date Nov 19, 1991
- Bayer Aktiengesellschaft
- Wolfgang Russeler
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of high molecular weight, optionally bra...
- Patent number 5,037,952
- Issue date Aug 6, 1991
- Bayer Aktiengesellschaft
- Manfred Schmidt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Liquid crystal polycondensates with improved heat stability, a proc...
- Patent number 5,030,703
- Issue date Jul 9, 1991
- Bayer Aktiengesellschaft
- Harald Pielartzik
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of aromatic polyesters
- Patent number 4,966,958
- Issue date Oct 30, 1990
- Bayer Aktiengesellschaft
- Peter Tacke
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Isolation of purified solid polyarylene sulfide directly from polym...
- Patent number 4,920,201
- Issue date Apr 24, 1990
- Bayer Aktiengesellschaft
- Wolfgang Jakob
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for isolating polyarylene sulphides
- Patent number 4,895,930
- Issue date Jan 23, 1990
- Bayer Aktiengesellschaft
- Franz Alfes
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of N-alkylated caprolactams
- Patent number 4,873,326
- Issue date Oct 10, 1989
- Bayer Aktiengesellschaft
- Wolfgang Jakob
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polyarylene sulphide capped with monophenol compound
- Patent number 4,771,120
- Issue date Sep 13, 1988
- Bayer Aktiengesellschaft
- Wolfgang Alewelt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of copolyamide from adipic acid, tereph...
- Patent number 4,762,910
- Issue date Aug 9, 1988
- Bayer Aktiengesellschaft
- Werner Nielinger
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Flame retardant polycarbonate compositions
- Patent number 4,753,994
- Issue date Jun 28, 1988
- Mobay Corporation
- Russell P. Carter
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the isolation of polyarylene sulphide from salts contai...
- Patent number 4,734,484
- Issue date Mar 29, 1988
- Bayer Aktiengesellschaft
- Franz Alfes
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyarylene sulphide having high melt viscosity
- Patent number 4,732,967
- Issue date Mar 22, 1988
- Bayer Aktiengesellschaft
- Karsten Idel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Production of polyester carbonates
- Publication number 20030139564
- Publication date Jul 24, 2003
- Silke Kratschmer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Production and use of polyester carbonates
- Publication number 20030105272
- Publication date Jun 5, 2003
- Silke Kratschmer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Working up of polymer sysnthesis solutions
- Publication number 20030023030
- Publication date Jan 30, 2003
- Wolfgang Alewelt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Continuous process for the production of carboxylic acid diaryl esters
- Publication number 20020087021
- Publication date Jul 4, 2002
- Wolfgang Alewelt
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for producing carbonic acid diaryl ester
- Publication number 20020077446
- Publication date Jun 20, 2002
- Wolfgang Alewelt
- C07 - ORGANIC CHEMISTRY

Wolfgang Alewelt

Person

Patents Grantslast 30 patents

Production of polyester carbonates

Working up of polymer synthesis solutions

Continuous process for the production of carboxylic acid diaryl esters

Production and use of polyester carbonates

Containers made of a branched polycarbonate

Process for producing carbonic acid diaryl ester

Improved transesterification process for the production of polycarb...

Guanidine-derived catalyts for preparing polycarbonates by transest...

Two-stage process for the production of thermoplastic polycarbonate

Process for the production of polycarbonates

Process for the production of thermoplastic polycarbonates

Process for the preparation of thermoplastic polycarbonates

Process for isolating polycarbonates from their solutions with tube...

Molten, catalytic process for the preparation of polycarbonates

Process for the preparation of polyarylene sulphides

Process for the purification of polyarylene sulphides

Continuous production of polycarbonates

Process for the production of solventless polycarbonate

Process for the manufacture of polyarylene sulphides

Process for the production of high molecular weight, optionally bra...

Liquid crystal polycondensates with improved heat stability, a proc...

Process for the preparation of aromatic polyesters

Isolation of purified solid polyarylene sulfide directly from polym...

Process for isolating polyarylene sulphides

Process for the preparation of N-alkylated caprolactams

Polyarylene sulphide capped with monophenol compound

Process for the preparation of copolyamide from adipic acid, tereph...

Flame retardant polycarbonate compositions

Process for the isolation of polyarylene sulphide from salts contai...

Polyarylene sulphide having high melt viscosity

Patents Applicationslast 30 patents

Production of polyester carbonates

Production and use of polyester carbonates

Working up of polymer sysnthesis solutions

Continuous process for the production of carboxylic acid diaryl esters

Process for producing carbonic acid diaryl ester