Sikkema; Doetze Jakob

Patent Applications and Registrations

Patent applications and USPTO patent grants for Sikkema; Doetze Jakob.The latest application filed is for "polymers comprising sulfonated 2,6-diphenyl-1,4-phenylene oxide repeating units".

Company Profile

0.17.14

Sikkema; Doetze Jakob - Wageningen NL
Sikkema; Doetze Jakob - Richmond VA
Sikkema; Doetze Jakob - Oosterbeek NL
Sikkema; Doetze Jakob - AT Oosterbeek NL

*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
Polymers comprising sulfonated 2,6-diphenyl-1,4-phenylene oxide repeating units Grant 11,434,329 - Sikkema September 6, 2	2022-09-06
Polymers Comprising Sulfonated 2,6-diphenyl-1,4-phenylene Oxide Repeating Units App 20200165387 - Sikkema; Doetze Jakob	2020-05-28
Process for crosslinking a polymer comprising pyridyl groups Grant 9,187,599 - Sikkema November 17, 2	2015-11-17
Process For Crosslinking A Polymer Comprising Pyridyl Groups App 20140243487 - Sikkema; Doetze Jakob	2014-08-28
Phenol compounds and (co)polymers thereof Grant 8,299,202 - Sikkema , et al. October 30, 2	2012-10-30
High inherent viscosity polymers and fibers therefrom Grant 8,263,221 - Sikkema , et al. September 11, 2	2012-09-11
Use of a (1>3)-.beta.-D-glucan as an emulsion stabiliser Grant 8,197,589 - Lommerts , et al. June 12, 2	2012-06-12
Use of a (1>3)-Beta-D-Glucan as an Emulsion Stabiliser App 20110168055 - Lommerts; Bert Jan ; et al.	2011-07-14
Process for hydrolyzing polyphosphoric acid in a spun yarn Grant 7,906,615 - Allen , et al. March 15, 2	2011-03-15
Process for removing cations from polyareneazole fiber Grant 7,906,613 - Sikkema March 15, 2	2011-03-15
Process for removing phosphorous from a fiber or yarn Grant 7,888,457 - Allen , et al. February 15, 2	2011-02-15
Process for preparing monomer complexes Grant 7,851,584 - Sikkema , et al. December 14, 2	2010-12-14
Process for the production of polyarenazole yarn Grant 7,776,246 - Allen , et al. August 17, 2	2010-08-17
Process For Hydrolyzing Polyphosphoric Acid In A Spun Yarn App 20100184945 - Allen; Steven R ; et al.	2010-07-22
Process For Removing Cations From Polyareneazole Fiber App 20100184943 - Sikkema; Doetze Jakob	2010-07-22
Process For Removing Phosphorous From A Fiber Or Yarn App 20100184944 - Allen; Steven R. ; et al.	2010-07-22
Thermal processes for increasing polyareneazole inherent viscosities Grant 7,754,846 - Adkins , et al. July 13, 2	2010-07-13
Processes for increasing polymer inherent viscosity Grant 7,683,122 - Sikkema , et al. March 23, 2	2010-03-23
Process for the production of polyarenazole polymer Grant 7,683,157 - Allen , et al. March 23, 2	2010-03-23
Processes for preparing high inherent viscosity polyareneazoles using metal powders Grant 7,671,171 - Sikkema , et al. March 2, 2	2010-03-02
Process For Preparing Monomer Complexes App 20090215946 - Sikkema; Doetze Jakob ; et al.	2009-08-27
Polyareneazole Polymer Fibers Having Pendant Hydroxyl Groups and Cations App 20080287647 - Sikkema; Doetze Jakob	2008-11-20
Process For The Production Of Polyarenazole Yarn App 20080179776 - Allen; Steven R. ; et al.	2008-07-31
Thermal processes for increasing polyareneazole inherent viscosities App 20070100120 - Adkins; Qinghong Fu ; et al.	2007-05-03
Processes for increasing polymer inherent viscosity App 20070072993 - Sikkema; Doetze Jakob ; et al.	2007-03-29
Processes for preparing high inherent viscosity polyareneazoles using metal powders App 20070010654 - Sikkema; Doetze Jakob ; et al.	2007-01-11
Process for the production of polyarenazole polymer App 20060287475 - Allen; Steven R. ; et al.	2006-12-21
High inherent viscosity polymers and fibers therefrom App 20060280937 - Sikkema; Doetze Jakob ; et al.	2006-12-14
Process for preparing pyridine-2,6-diamines Grant 5,939,553 - Reichwein , et al. August 17, 1	1999-08-17
Rigid rod polymer based on pyridobisimidazole Grant 5,674,969 - Sikkema , et al. October 7, 1	1997-10-07

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