82 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Mar 2034. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Mar 2034
Next term end
62
Patent families
When these terms end
Held patents by the year their term ends
notable patents
all others
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: the highest-ranked patents in this portfolio by citations and family size.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Jan 2035 · High confidence
Also notable
Ends Apr 2036 · High confidence
Also notable
Ends no later than Jun 2036 · Medium confidence
Detection of Geomagnetically-Induced Currents with Power Line-Mounted Devices
US 9,753,059
The most cited patent in this portfolio, cited by 193 later US patents, top 1% of utility patents granted in 2017 in our data. Protection runs to 2035. A terminal disclaimer caps this term to an earlier patent's.
Voltage or Impedance-Injection Method Using Transformers with Multiple Secondary Windings for Dynamic Power Flow Control
US 10,008,317
Cited by 33 later US patents, top 10% of utility patents granted in 2018 in our data, and renewed at every maintenance window due so far. Protection runs to 2036.
Dynamic and Integrated Control of Total Power System Using Distributed Impedance Injection Modules and Actuator Devices Within and at the Edge of the Power Grid
US 10,218,175
Cited by 20 later US patents, top 25% of utility patents granted in 2019 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2036. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
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.
- 3 fees due Feb 15 to 27, 2027 · next Feb 15
- 4 fees due Mar 12 to 24, 2027 · next Mar 12
- 4 fees due Apr 3 to 27, 2027 · next Apr 3
- 4 fees due May 5 to 21, 2027 · next May 5
- 2 fees due Jun 12 to 22, 2027 · next Jun 12
- 1 fee due Jul 30, 2027The maintenance fee for Modular FACTS Devices with External Fault Current Protection (US 11,888,308) comes due Jul 30, 2027. Unpaid by Jan 31, 2028, it lapses early.
- 2 fees due Aug 11 to 27, 2027 · next Aug 11
- 1 fee due Nov 12, 2027The maintenance fee for Modular, Space-Efficient Structures Mounting Multiple Electrical Devices (US 10,651,633) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
The 5 largest of its 62 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,816,527 | Phase Balancing of Power Transmission System In force · Medium confidence | In force | Medium confidence | |
| US 9,172,246 | Phase Balancing of Power Transmission System In force · Medium confidence | In force | Medium confidence | |
| US 9,906,031 | Power Line Reactance Module and Applications In force · High confidence | In force | High confidence | |
| US 9,217,762 | Detection of Geomagnetically-Induced Currents with Power Line-Mounted Devices In force · High confidence | In force | High confidence | |
| US 9,753,059 | Detection of Geomagnetically-Induced Currents with Power Line-Mounted Devices In force · High confidence | In force | High confidence | |
| US 10,180,696 | Distributed Impedance Injection Module for Mitigation of the Ferranti Effect In force · High confidence | In force | High confidence | |
| US 10,424,929 | Transformers with Multi-Turn Primary Windings for Dynamic Power Flow Control In force · High confidence | In force | High confidence | |
| US 10,903,653 | Voltage Agnostic Power Reactor In force · High confidence | In force | High confidence | |
| US 10,559,975 | System and Method for Distributed Grid Control with Sub-Cyclic Local Response Capability In force · High confidence | In force | High confidence | |
| US 10,749,341 | Dynamic and Integrated Control of Total Power System Using Distributed Impedance Injection Modules and Actuator Devices Within and at the Edge of the Power Grid In force · Medium confidence | In force | Medium confidence |
Also on record, not counted in the 82: 1 patent ended · 4 applications pending · 3 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.