Inventor
Doetze Jakob Sikkema
Inventor
Richmond, VA, US
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds26%
D01FChemical features in the manufacture of artificial filaments, threads, fibres, bristles or ribbons13%
Y10TTechnical subjects covered by former us classification13%
C07DHeterocyclic compounds7%
C08JWorking-up7%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients6%
D01DMechanical methods or apparatus in the manufacture of artificial filaments, threads, fibres, bristles or ribbons4%
A41DOuterwear2%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form2%
C07CAcyclic or carbocyclic compounds2%
PatentTitleYear
9,187,599'Process for crosslinking a polymer comprising pyridyl groups'20158,299,202'Phenol compounds and (co)polymers thereof'20128,263,221'High inherent viscosity polymers and fibers therefrom'20128,197,589'Use of a (1>3)-β-D-glucan as an emulsion stabiliser'20127,906,613'Process for removing cations from polyareneazole fiber'20117,906,615'Process for hydrolyzing polyphosphoric acid in a spun yarn'20117,888,457'Process for removing phosphorous from a fiber or yarn'20117,851,584'Process for preparing monomer complexes'20107,776,246'Process for the production of polyarenazole yarn'20107,754,846'Thermal processes for increasing polyareneazole inherent viscosities'20107,683,157'Process for the production of polyarenazole polymer'20107,683,122'Processes for increasing polymer inherent viscosity'20107,671,171'Processes for preparing high inherent viscosity polyareneazoles using metal powders'20106,040,478'Process for dicarboxylating dihydric phenols'20005,945,537'Nitration of pyridine-2, 6-diamines'19995,939,553'Process for preparing pyridine-2,6-diamines'19995,674,969'Rigid rod polymer based on pyridobisimidazole'19975,010,168'Aramid polymer from aromatic dicarboxylic acid mixture and aromatic diamine mixture'19915,001,209'Non-linear optical active diols and polyurethanes prepared therefrom'19914,908,264'Composites comprising an aramid matrix'19904,758,651'Amorphous aromatic copolyamide, a process for the preparation thereof, and shaped object'19884,493,870'Flexible layered product'19854,029,637'Acid dyeable polyester containing 1,8-bis-(dialkyl-amino)naphthalane'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977Based in Duiven, NL· patent location history
1985–1991Patents assigned to AKZO NV (5)· patent assignee history
1985–1991Based in Ellecom, NL· patent location history
1997–2000Patents assigned to AKZO NOBEL NV (4)· patent assignee history
1997–2000Based in Oosterbeek, NL· patent location history
2010–2012Patents assigned to MAGELLAN SYSTEMS INT LLC (10)· patent assignee history
2010–2012Patents assigned to DU PONT (9)· patent assignee history
2010–2012Based in Richmond, VA, US· patent location history
2010–2015Based in Wageningen, NL· patent location history
2012Patents assigned to SIKKEMA DOETZE JAKOB (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MAGELLAN SYSTEMS INT LLC | 10 | 2010–2012 |
| DU PONT | 9 | 2010–2012 |
| AKZO NV | 5 | 1985–1991 |
| AKZO NOBEL NV | 4 | 1997–2000 |
| SIKKEMA DOETZE JAKOBself | 3 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Richmond, Virginia, US | 8 | 2010–2012 |
| Wageningen, NL | 5 | 2010–2015 |
| Ellecom, NL | 5 | 1985–1991 |
| Oosterbeek, NL | 4 | 1997–2000 |
| Duiven, NL | 1 | 1977 |