Two patents currently held, every record listed here
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Apr 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
1
Ending by 2030
Apr 2027
Next term end
2
Patent families
When these terms end
Each bar runs from grant to computed term end. 2010 to 2032.20152020202520302032
Every computed term in this portfolio is shown above.Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Only 2 of the currently held patents qualify as notable.
Notable
Ends Apr 2027 · High confidence
Also notable
Ends Apr 2032 · High confidence
Method for Operation of a Gas Turbine Group
US 7,721,552
The most cited patent in this portfolio, cited by 32 later US patents, top 25% of utility patents granted in 2010 in our data. Protection runs to 2027.
Method of Operating a Gas Turbine Power Plant and Gas Turbine Power Plant
US 9,062,607
Granted 2015 and renewed at every maintenance window due so far. Protection runs to 2032.
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 23, 2026The maintenance fee for Method of Operating a Gas Turbine Power Plant and Gas Turbine Power Plant (US 9,062,607) comes due Dec 23, 2026. Unpaid by Jun 23, 2027, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
| Method of Operating a Gas Turbine Power Plant and Gas Turbine Power Plant | 1 in force | to Apr 2032 |
| Method for Operation of a Gas Turbine Group | 1 in force | to Apr 2027 |
Patents held now
Soonest term end first.
Showing 1 to 2 of 2
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,721,552 | Method for Operation of a Gas Turbine Group In force · High confidence | In force | High confidence | |
| US 9,062,607 | Method of Operating a Gas Turbine Power Plant and Gas Turbine Power Plant In force · High confidence | In force | High confidence |
Also on record, not counted in the 2: 1 patent ended · 2 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.