Igm Group B.V.
1 more in force is now held by another company
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 2 name spellings.
10
Ending by 2030
Jun 2028
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Nov 28, 2026The maintenance fee for LED-curable low migration photoinitiators (US 10,301,399) comes due Nov 28, 2026. Unpaid by May 28, 2027, it lapses early.
- 1 fee due Mar 1, 2027The maintenance fee for Polymer-Bound Bisacylphosphine Oxides (US 9,120,900) comes due Mar 1, 2027. Unpaid by Sep 1, 2027, it lapses early.
- 1 fee due Jun 1, 2027The maintenance fee for Alpha-Hydroxyketones (US 9,199,934) comes due Jun 1, 2027. Unpaid by Dec 1, 2027, it lapses early.
- 2 fees due Sep 24 to 29, 2027 · next Sep 24
Recent changes
- 2 terms have ended since Aug 16, 2026
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,067,643 | Sulphonium Salt Initiators In force · High confidence | In force | High confidence | |
| US 8,084,522 | Thermally Stable Cationic Photocurable Compositions In force · High confidence | In force | High confidence | |
| US 8,252,959 | Preparation of Alpha-Hydroxy and Alpha-Amino Ketones In force · High confidence | In force | High confidence | |
| US 8,426,484 | Liquid Photoinitiator Blend In force · High confidence | In force | High confidence | |
| US 9,199,934 | Alpha-Hydroxyketones In force · High confidence | In force | High confidence | |
| US 8,637,585 | Silsesquioxane Photoinitiators In force · High confidence | In force | High confidence | |
| US 8,524,808 | Radiation curable compositions In force · From the USPTO record | In force | From the USPTO record | |
| US 9,120,900 | Polymer-Bound Bisacylphosphine Oxides In force · High confidence | In force | High confidence | |
| US 8,604,251 | Novel Oligofunctional Photoinitiators In force · High confidence | In force | High confidence | |
| US 8,906,979 | Macrophotoinitiators In force · High confidence | In force | High confidence |
Also on record, not counted in the 24: 1 patent in force now held by others · 3 lapsed for an unpaid fee · 42 ended at full term. List them
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
3 pending