3,245 patents currently held
1,774 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
9 more records may belong here and await a decision; they are not counted.
The next term ends in Nov 2026. from the record
Of the 1,774 now held by other companies, 1,124 name Hitachi Energy Ltd. as their current owner, and 650 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
389
Ending by 2030
Nov 2026
Next term end
3,088
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
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. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends no later than Dec 2028 · Medium confidence
Also notable
Ends Aug 2037 · High confidence
Also notable
Ends Oct 2027 · High confidence
Charging Station
US D720,285
Cited by 99 later US patents, top 5% of design patents granted in 2014 in our data. Protection runs to 2028. 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.
Display Screen or Portion Thereof with Animated Graphical User Interface
US D960,185
Cited by 27 later US patents, top 10% of design patents granted in 2022 in our data. Protection runs to 2037.
Equipment for Distribution of Electric Power
US D691,558
A family of 60 related applications built on the 2013 grant. Protection runs to 2027.
Formerly held, still cited
Notable
Ends May 2028 · Medium confidence
Cited by 173 later US patents, top 1% of utility patents granted in 2018 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2028.
now held by Hitachi Energy Ltd.
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.
- 19 fees due Nov 23 to 30, 2026 · next Nov 23
- 47 fees due Dec 2 to 30, 2026 · next Dec 2
- 51 fees due Jan 2 to 30, 2027 · next Jan 2
- 49 fees due Feb 1 to 28, 2027 · next Feb 1
- 51 fees due Mar 1 to 29, 2027 · next Mar 1
- 56 fees due Apr 1 to 30, 2027 · next Apr 1
- 43 fees due May 5 to 28, 2027 · next May 5
- 52 fees due Jun 1 to 30, 2027 · next Jun 1
- 54 fees due Jul 2 to 30, 2027 · next Jul 2
- 48 fees due Aug 2 to 27, 2027 · next Aug 2
- 57 fees due Sep 1 to 30, 2027 · next Sep 1
- 63 fees due Oct 2 to 30, 2027 · next Oct 2
- 20 fees due Nov 3 to 14, 2027 · next Nov 3
Recent changes
- Oct 28Assignment recorded on 1 record: Lei, Haoteng and 3 others to ABB Schweiz AG Recorded Oct 28, 2026, executed Oct 28, 2026. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76544, frame 380.
- Oct 15Assignment recorded on 1 record: Reinthaler, Michael and 2 others to ABB Schweiz AG Recorded Oct 15, 2026, executed Sep 10, 2026. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76391, frame 148.
- 99 of the patents on this record were granted since Aug 17, 2026
- 49 terms have ended since Aug 17, 2026
What they patent
The 5 largest of its 3,088 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Cabinet for a Frequency Converter | 13 in force | to Oct 2029 |
| Cam Switch (2013) | 9 in force | to Sep 2031 |
| Cam Switch (2013) | 9 in force | to May 2031 |
| Display Screen or Portion Thereof with Graphical User Interface | 8 in force | to Aug 2037 |
| Display Screen or Portion Thereof With Icon | 8 in force | to Aug 2032 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,408,791 | Frequency Converter Assembly and Method of Using Frequency Converter Assembly In force · High confidence | In force | High confidence | |
| US 7,447,702 | System and Method for the Structurally Decoupled Exchange of Object-Oriented Data Structures In force · High confidence | In force | High confidence | |
| US 7,808,360 | Cushioning Materials and Method for Applying the Same to Resin Cast Transformers In force · High confidence | In force | High confidence | |
| US D671,099 | Communication Device In force · High confidence | In force | High confidence | |
| US D671,494 | Motor Starter Display In force · High confidence | In force | High confidence | |
| US 7,550,872 | Current Sensor Apparatus and Method for Uninterruptible Power Supply In force · High confidence | In force | High confidence | |
| US 7,384,317 | Multi-Terminal Block for Electronic Devices Having Superimposed Conductor Connecting Levels In force · High confidence | In force | High confidence | |
| US 7,692,903 | Apparatus and Method for Controlling a Circuit Breaker Trip Device In force · Low confidence | In force | Low confidence | |
| US 7,446,270 | Interlock Assemblies for Circuit Breakers In force · High confidence | In force | High confidence | |
| US 7,517,235 | Press Fit Connection for Mounting Electrical Plug-In Outlet Insulator to a Busway Aluminum Housing In force · High confidence | In force | High confidence |
Also on record, not counted in the 3,245: 1,774 patents in force now held by others · 1,363 patents ended · 881 applications pending · 473 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.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.