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Fritz Wilhelm
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Offenbach am Main, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Method for the esterification of terephtalic acid with butanediol,...
Patent number
8,143,367
Issue date
Mar 27, 2012
Lurgi Zimmer GmbH
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of producing polyesters
Patent number
8,017,717
Issue date
Sep 13, 2011
Lurgi Zimmer GmbH
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process of discontinuous polycondensation and stirring reactor thereof
Patent number
7,850,926
Issue date
Dec 14, 2010
Lurgi Zimmer GmbH
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing polyesters and a disk ring reactor for the method
Patent number
7,550,116
Issue date
Jun 23, 2009
Lurgi Zimmer GmbH
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method and device for the continuous production of polyesters
Patent number
7,244,806
Issue date
Jul 17, 2007
Zimmer Aktiengesellschaft
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process of continuously producing polyesters or copolyesters
Patent number
7,153,927
Issue date
Dec 26, 2006
Zimmer AG
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method and device for producing polyesters, copolyesters and polyca...
Patent number
7,084,234
Issue date
Aug 1, 2006
Zimmer Aktiengesellschaft
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for the production of polybutylene terephthalate
Patent number
6,967,235
Issue date
Nov 22, 2005
Zimmer Aktiengesellschaft
Eckhard Seidel
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing polycarbonates
Patent number
6,838,543
Issue date
Jan 4, 2005
Zimmer A.G.
Rudolf Kaempf
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing polytrimethylene terephthalate (PTT)
Patent number
6,800,718
Issue date
Oct 5, 2004
Zimmer Aktiengesellschaft
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process of producing polytrimethylene terephthalate (PTT)
Patent number
6,512,080
Issue date
Jan 28, 2003
Shell Oil Company
Donald Ross Kelsey
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Optimum dipropylene glycol content polytrimethylene terephthalate c...
Patent number
6,509,438
Issue date
Jan 21, 2003
Shell Oil Company
Donald Ross Kelsey
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process of producing polytrimethylene terephthalate (PTT)
Patent number
6,326,456
Issue date
Dec 4, 2001
Shell Oil Company
Donald Ross Kelsey
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process of producing polytrimethylene terephthalate (PTT)
Patent number
6,277,947
Issue date
Aug 21, 2001
Shell Oil Company
Donald Ross Kelsey
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for generating a vacuum in production of polycarbonate
Patent number
5,576,414
Issue date
Nov 19, 1996
Zimmer Aktiengesellschaft
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the reduction of carboxyl-end groups of linear polyesters
Patent number
5,563,209
Issue date
Oct 8, 1996
Zimmer Aktiengesellschaft
Heinz-Dieter Schumann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Apparatus for processing high viscosity materials
Patent number
5,055,273
Issue date
Oct 8, 1991
Davy McKee Aktiengesellschaft
Fritz Wilhelm
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Process for the continuous production of high-molecular polybutylen...
Patent number
4,680,376
Issue date
Jul 14, 1987
Davy McKee A.G.
Helmut Heinze
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the continuous production of polybutylene terephthalate...
Patent number
4,499,261
Issue date
Feb 12, 1985
Davy McKee A.G.
Helmut Heinze
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process and apparatus for removing evaporable components from polya...
Patent number
4,128,453
Issue date
Dec 5, 1978
Zimmer Aktiengesellschaft
Dieter Angerer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
METHOD OF PRODUCING POLYESTERS
Publication number
20090240007
Publication date
Sep 24, 2009
Fritz WILHELM
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR THE ESTERIFICATION OF TEREPHTALIC ACID WITH BUTANEDIOL,...
Publication number
20090221768
Publication date
Sep 3, 2009
LURGI GMBH
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method and device for the production of polyesters and copolyesters
Publication number
20090192285
Publication date
Jul 30, 2009
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method for Producing Polyesters and A Disk Ring Reactor for the Method
Publication number
20080064834
Publication date
Mar 13, 2008
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method and device for the continuous pre-polycondensation of esteri...
Publication number
20060030727
Publication date
Feb 9, 2006
ZIMMER AKTIENGESELLSCHAFT
Fritz Wilhelm
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Method and device for the continuous production of polyesters
Publication number
20060009608
Publication date
Jan 12, 2006
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method and device for producing polyesters, copolyesters and polyca...
Publication number
20050222371
Publication date
Oct 6, 2005
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method for the production of polybutylene terephthalate
Publication number
20040236067
Publication date
Nov 25, 2004
Eckhard Seidel
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method for continuous production of polyesters or copolyesters
Publication number
20040106746
Publication date
Jun 3, 2004
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method for producing polycarbonates
Publication number
20040106765
Publication date
Jun 3, 2004
Rudolf Kaempf
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Batch polycondensation method and a rotating disc reactor therefor
Publication number
20030139543
Publication date
Jul 24, 2003
Fritz Wilhelm
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process of producing polytrimethylene terephthalate (PTT)
Publication number
20020028909
Publication date
Mar 7, 2002
Donald Ross Kelsey
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Optimum dipropylene glycol content polytrimethylene terephthalate c...
Publication number
20020009353
Publication date
Jan 24, 2002
Donald Ross Kelsey
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
Process of producing polytrimethylene terephthalate (PTT)
Publication number
20010029289
Publication date
Oct 11, 2001
Donald Ross Kelsey
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...