Grimaldi Development AB
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.
Previously recorded as 3NINE AB (to 2022)
3
Ending by 2030
Jan 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 Nov 23, 2026The maintenance fee for Method and installation for removing a gas from a flow of a gas mixture (US 11,654,394) comes due Nov 23, 2026. Unpaid by May 24, 2027, it lapses early.
- 1 fee due Feb 18, 2027The maintenance fee for Method and a filter for capturing airborne agents (US 9,107,970) comes due Feb 18, 2027. Unpaid by Aug 18, 2027, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
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 7,749,310 | Device and method for cleaning a centrifugal separator In force · From the USPTO record | In force | From the USPTO record | |
| US 8,029,601 | Method and apparatus for separation of particles from a flow of gas In force · From the USPTO record | In force | From the USPTO record | |
| US 8,171,920 | Device for cleaning crank case gases In force · From the USPTO record | In force | From the USPTO record | |
| US 8,945,261 | Apparatus for centrifugal separation of solid and/or liquid particles from a flow of gas In force · From the USPTO record | In force | From the USPTO record | |
| US 9,107,970 | Method and a filter for capturing airborne agents In force · From the USPTO record | In force | From the USPTO record | |
| US 10,118,184 | Centrifugal separator conical rotor disc elements having radial projections, and rotors having disc elements In force · From the USPTO record | In force | From the USPTO record | |
| US 10,286,406 | Apparatus for Centrifugal Separation of Liquid Particles from a Gas In force · High confidence | In force | High confidence | |
| US 10,682,600 | Apparatus for cleaning crankcase gases In force · From the USPTO record | In force | From the USPTO record | |
| US 11,167,243 | Method and installation for the reduction of sulphur oxides in exhaust gas from marine diesel engines In force · From the USPTO record | In force | From the USPTO record | |
| US 11,098,622 | Oil separator In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 16: 1 patent in force now held by others · 2 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.
1 pending · 1 no status recorded