Sinvent As
6 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
4
Ending by 2030
Oct 2027
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 Dec 30, 2026The maintenance fee for Treatment of produced hydrocarbon fluid containing water (US 9,068,451) comes due Dec 30, 2026. Unpaid by Jun 30, 2027, it lapses early.
- 1 fee due Feb 6, 2027The maintenance fee for Gas hydrate inhibitor, method and use of hyperbranched polyester polyols as gas hydrate inhibitors (US 10,370,581) comes due Feb 6, 2027. Unpaid by Aug 6, 2027, it lapses early.
Recent changes
- 3 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 7,960,492 | Polybranched, organic/inorganic hybrid polymer and method for its manufacture In force · From the USPTO record | In force | From the USPTO record | |
| US 8,163,064 | Leak-proof membrane element and method of manufacturing such an element In force · From the USPTO record | In force | From the USPTO record | |
| US 8,328,709 | Fluid separator apparatus comprising a spin-up assembly In force · From the USPTO record | In force | From the USPTO record | |
| US 8,931,287 | Process and Apparatus for Injecting LCD into an Offshore Injection Well In force · High confidence | In force | High confidence | |
| US 9,068,451 | Treatment of produced hydrocarbon fluid containing water In force · From the USPTO record | In force | From the USPTO record | |
| US 8,789,624 | Cutting tool integrated in a drillstring In force · From the USPTO record | In force | From the USPTO record | |
| US 9,341,026 | Apparatus and method for modifying the sidewalls of a borehole In force · From the USPTO record | In force | From the USPTO record | |
| US 10,047,605 | Method and system for wireless in-situ sampling of a reservoir fluid In force · From the USPTO record | In force | From the USPTO record | |
| US 10,683,626 | Device and method for dispersing oil on water In force · From the USPTO record | In force | From the USPTO record | |
| US 10,370,581 | Gas hydrate inhibitor, method and use of hyperbranched polyester polyols as gas hydrate inhibitors In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 11: 6 patents in force now held by others · 42 lapsed for an unpaid fee · 32 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.
17 no status recorded