54 patents currently held
29 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.
2 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 29 now held by other companies, 16 name Higgs Opl Capital LLC as their current owner, and 13 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
51
Ending by 2030
Nov 2026
Next term end
48
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 Oct 2027 · High confidence
Also notable
Ends May 2027 · High confidence
Also notable
Ends Dec 2026 · High confidence
Integrated Circuits with Substrate Protrusions, Including (BUT Not Limited to) Floating Gate Memories
US 7,808,032
The most cited patent in this portfolio, cited by 229 later US patents, top 5% of utility patents granted in 2010 in our data. Protection runs to 2027.
Phase Change Memory Device
US 7,732,801
Renewed at every maintenance window since the 2010 grant; no more fees are due before its term ends in 2027.
Phase Change Memory Device and Fabrication Method Thereof
US 7,538,043
Renewed at every maintenance window since the 2009 grant; no more fees are due before its term ends in 2026.
Formerly held, still cited
Notable
Ends Mar 2027 · High confidence
Cited by 50 later US patents, top 25% of utility patents granted in 2009 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.
now held by Nanya Technology Corporation
Also notable
Ends Feb 2028 · High confidence
Renewed at every maintenance window since the 2010 grant; no more fees are due before its term ends in 2028.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
- 6 terms have ended since Aug 17, 2026
What they patent
The 5 largest of its 48 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Method for Preparing a Shallow Trench Isolation | 3 in force | to Sep 2029 |
| Method of Repairing Deep Subsurface Defects in a Silicon Substrate That Includes Diffusing Negatively Charged Ions into the Substrate from a Sacrificial Oxide Layer | 2 in force | to May 2029 |
| Integrated Circuits with Substrate Protrusions, Including (BUT Not Limited to) Floating Gate Memories | 2 in force | to Oct 2027 |
| Phase Change Memory Device | 2 in force | to Oct 2027 |
| Phase Change Memory Device and Fabrication Method Thereof | 2 in force | to Dec 2026 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,494,865 | Fabrication Method of Metal Oxide Semiconductor Transistor In force · High confidence | In force | High confidence | |
| US 7,538,043 | Phase Change Memory Device and Fabrication Method Thereof held by Promos Technologies Inc. and Winbond Electronics Corp. In force · High confidence | In force | High confidence | |
| US 8,071,970 | Phase Change Memory Device and Fabrication Method Thereof held by Winbond Electronics Corp. and Promos Technologies Inc. In force · High confidence | In force | High confidence | |
| US 7,524,732 | Semiconductor Device with L-Shaped Spacer and Method of Manufacturing the Same In force · High confidence | In force | High confidence | |
| US 7,436,526 | Real-Time System for Monitoring and Controlling Film Uniformity and Method of Applying the Same In force · High confidence | In force | High confidence | |
| US 7,459,383 | Fabricating Method of Gate Structure In force · High confidence | In force | High confidence | |
| US 7,518,425 | Circuit and Technique for Adjusting and Accurately Controlling Clock Duty Cycles in Integrated Circuit Devices In force · High confidence | In force | High confidence | |
| US 7,611,949 | Method of Fabricating Metal-Oxide-Semiconductor Transistor In force · High confidence | In force | High confidence | |
| US 7,452,776 | Integrated Circuits with Substrate Protrusions, Including (BUT Not Limited to) Floating Gate Memories In force · High confidence | In force | High confidence | |
| US 7,510,955 | Method of Fabricating Multi-Fin Field Effect Transistor In force · High confidence | In force | High confidence |
Also on record, not counted in the 54: 29 patents in force now held by others · 307 patents ended · 1 application pending · 204 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.
1 patents carry no fee events. That is a gap in the record, not evidence of lapse, so status falls back to the computed term