Versa Power Systems, Ltd.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 2 name spellings.
4
Ending by 2030
Jun 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 Feb 15, 2027The maintenance fee for Compact High Temperature Electrochemical Cell Stack Architecture (US 11,728,494) comes due Feb 15, 2027. Unpaid by Aug 16, 2027, it lapses early.
- 1 fee due Apr 3, 2027The maintenance fee for Proton-Conducting Ceramic Fuel Cell Architecture (US 11,777,105) comes due Apr 3, 2027. Unpaid by Oct 4, 2027, it lapses early.
- 1 fee due May 17, 2027The maintenance fee for Cell materials variation in SOFC stacks to address thermal gradients in all planes (US 9,190,669) comes due May 17, 2027. Unpaid by Nov 17, 2027, it lapses early.
Recent changes
- 1 of the patents on this record was granted since Aug 16, 2026
- 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 7,892,687 | Fuel cell shutdown with steam purging In force · From the USPTO record | In force | From the USPTO record | |
| US 8,216,738 | Deactivation of Sofc Anode Substrate for Direct Internal Reforming In force · High confidence | In force | High confidence | |
| US 8,313,875 | High performance cathode with controlled operating temperature range In force · From the USPTO record | In force | From the USPTO record | |
| US 9,190,669 | Cell materials variation in SOFC stacks to address thermal gradients in all planes In force · From the USPTO record | In force | From the USPTO record | |
| US 9,559,366 | Systems and methods for preventing chromium contamination of solid oxide fuel cells In force · From the USPTO record | In force | From the USPTO record | |
| US 10,084,192 | Cathode Contact Layer Design for Preventing Chromium Contamination of Solid Oxide Fuel Cells In force · High confidence | In force | High confidence | |
| US 12,327,888 | Compact High Temperature Electrochemical Cell Stack Architecture In force · High confidence | In force | High confidence | |
| US 12,327,887 | Compact High Temperature Electrochemical Cell Stack Architecture In force · High confidence | In force | High confidence | |
| US 11,335,919 | Selectively rotated flow field for thermal management in a fuel cell stack In force · From the USPTO record | In force | From the USPTO record | |
| US 11,728,494 | Compact High Temperature Electrochemical Cell Stack Architecture In force · High confidence | In force | High confidence |
Also on record, not counted in the 18: 2 lapsed for an unpaid fee · 28 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.
4 pending · 2 no status recorded