Wilhelm; Fritz

Patent Applications and Registrations

Patent applications and USPTO patent grants for Wilhelm; Fritz.The latest application filed is for "method of producing polyesters".

Company Profile

0.11.14

Wilhelm; Fritz - Karben DE
Wilhelm; Fritz - Offenbach am Main DE

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method for the esterification of terephtalic acid with butanediol, method for the manufacture of polybutylene terephtalate and a device therefor Grant 8,143,367 - Wilhelm , et al. March 27, 2	2012-03-27
Method of producing polyesters Grant 8,017,717 - Wilhelm , et al. September 13, 2	2011-09-13
Process of discontinuous polycondensation and stirring reactor thereof Grant 7,850,926 - Wilhelm , et al. December 14, 2	2010-12-14
Method Of Producing Polyesters App 20090240007 - WILHELM; Fritz ; et al.	2009-09-24
Method For The Esterification Of Terephtalic Acid With Butanediol, Method For The Manufacture Of Polybutylene Terephtalate And A Device Therefor App 20090221768 - Wilhelm; Fritz ; et al.	2009-09-03
Method and device for the production of polyesters and copolyesters App 20090192285 - Wilhelm; Fritz ; et al.	2009-07-30
Method for producing polyesters and a disk ring reactor for the method Grant 7,550,116 - Wilhelm , et al. June 23, 2	2009-06-23
Method for Producing Polyesters and A Disk Ring Reactor for the Method App 20080064834 - Wilhelm; Fritz ; et al.	2008-03-13
Method and device for the continuous production of polyesters Grant 7,244,806 - Wilhelm , et al. July 17, 2	2007-07-17
Process of continuously producing polyesters or copolyesters Grant 7,153,927 - Wilhelm , et al. December 26, 2	2006-12-26
Method and device for producing polyesters, copolyesters and polycarbonates Grant 7,084,234 - Wilhelm , et al. August 1, 2	2006-08-01
Method and device for the continuous pre-polycondensation of esterification/transesterification products App 20060030727 - Wilhelm; Fritz ; et al.	2006-02-09
Method and device for the continuous production of polyesters App 20060009608 - Wilhelm; Fritz ; et al.	2006-01-12
Method for the production of polybutylene terephthalate Grant 6,967,235 - Seidel , et al. November 22, 2	2005-11-22
Method and device for producing polyesters, copolyesters and polycarbonates App 20050222371 - Wilhelm, Fritz ; et al.	2005-10-06
Method for producing polycarbonates Grant 6,838,543 - Kaempf , et al. January 4, 2	2005-01-04
Method for the production of polybutylene terephthalate App 20040236067 - Seidel, Eckhard ; et al.	2004-11-25
Process for producing polytrimethylene terephthalate (PTT) Grant 6,800,718 - Wilhelm , et al. October 5, 2	2004-10-05
Method for continuous production of polyesters or copolyesters App 20040106746 - Wilhelm, Fritz ; et al.	2004-06-03
Method for producing polycarbonates App 20040106765 - Kaempf, Rudolf ; et al.	2004-06-03
Batch polycondensation method and a rotating disc reactor therefor App 20030139543 - Wilhelm, Fritz ; et al.	2003-07-24
Process of producing polytrimethylene terephthalate (PTT) App 20020028909 - Kelsey, Donald Ross ; et al.	2002-03-07
Optimum dipropylene glycol content polytrimethylene terephthalate compositions App 20020009353 - Kelsey, Donald Ross ; et al.	2002-01-24
Process of producing polytrimethylene terephthalate (PTT) App 20010029289 - Kelsey, Donald Ross ; et al.	2001-10-11
Process and apparatus for removing evaporable components from polyamide melts Grant 4,128,453 - Angerer , et al. December 5, 1	1978-12-05

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