Purefize Technologies AB
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Previously recorded as Lightlab Sweden AB (to 2023)
3
Ending by 2030
Dec 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 26, 2026The maintenance fee for Reflective anode structure for a field emission lighting arrangement (US 9,041,276) comes due Nov 26, 2026. Unpaid by May 26, 2027, it lapses early.
- 2 fees due Dec 11 to 18, 2026 · next Dec 11
- 1 fee due Feb 4, 2027The maintenance fee for Method for manufacturing nanostructures and cathode for field emission lighting arrangement (US 9,099,273) comes due Feb 4, 2027. Unpaid by Aug 4, 2027, it lapses early.
- 1 fee due Apr 1, 2027The maintenance fee for X-Ray Source and System Comprising an X-Ray Source (US 10,431,413) comes due Apr 1, 2027. Unpaid by Oct 1, 2027, it lapses early.
- 1 fee due May 12, 2027The maintenance fee for Method for manufacturing nanostructures for a field emission cathode (US 10,475,616) comes due May 12, 2027. Unpaid by Nov 12, 2027, it lapses early.
- 1 fee due Jul 12, 2027The maintenance fee for Power Supply for a Field Emission Light Source (US 9,237,622) comes due Jul 12, 2027. Unpaid by Jan 12, 2028, it lapses early.
- 1 fee due Sep 15, 2027The maintenance fee for Electrical Power Control of a Field Emission Lighting System (US 9,288,885) comes due Sep 15, 2027. Unpaid by Mar 15, 2028, 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 8,143,775 | Two-way reciprocal amplification electron/photon source In force · From the USPTO record | In force | From the USPTO record | |
| US D731,682 | Field Emission Lamp In force · High confidence | In force | High confidence | |
| US 9,041,276 | Reflective anode structure for a field emission lighting arrangement In force · From the USPTO record | In force | From the USPTO record | |
| US 9,006,964 | Field Emission Cathode In force · High confidence | In force | High confidence | |
| US 9,288,885 | Electrical Power Control of a Field Emission Lighting System In force · High confidence | In force | High confidence | |
| US 9,099,273 | Method for manufacturing nanostructures and cathode for field emission lighting arrangement In force · From the USPTO record | In force | From the USPTO record | |
| US 9,237,622 | Power Supply for a Field Emission Light Source In force · High confidence | In force | High confidence | |
| US 10,043,649 | Shaped Cathode for a Field Emission Arrangement In force · High confidence | In force | High confidence | |
| US 10,325,770 | Field Emission Light Source In force · High confidence | In force | High confidence | |
| US 10,836,655 | A System for Uv Light Treatment of a Fluid In force · High confidence | In force | High confidence |
Also on record, not counted in the 19: 1 lapsed for an unpaid fee. 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