745 patents currently held
150 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.
The next term ends in Apr 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
52
Ending by 2030
Apr 2027
Next term end
320
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 14, 2026 · includes USPTO assignment & status data published Nov 14, 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 Mar 2028 · High confidence
Also notable
Ends Mar 2029 · High confidence
Also notable
Ends May 2032 · High confidence
Method and Apparatus for Use in Improving Linearity of Mosfet's Using an Accumulated Charge Sink
US 7,910,993
The most cited patent in this portfolio, cited by 366 later US patents, top 1% of utility patents granted in 2011 in our data. Protection runs to 2028.
Method and Apparatus for Use in Digitally Tuning a Capacitor in an Integrated Circuit Device
US 9,024,700
Cited by 247 later US patents, top 5% of utility patents granted in 2015 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2029.
Dc-Dc Converter with Modular Stages
US 8,860,396
Cited by 184 later US patents, top 5% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. 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.
- 4 fees due Nov 23 to 26, 2026 · next Nov 23
- 11 fees due Dec 4 to 27, 2026 · next Dec 4
- 7 fees due Jan 2 to 30, 2027 · next Jan 2
- 18 fees due Feb 8 to 28, 2027 · next Feb 8
- 8 fees due Mar 1 to 26, 2027 · next Mar 1
- 17 fees due Apr 1 to 30, 2027 · next Apr 1
- 15 fees due May 3 to 28, 2027 · next May 3
- 14 fees due Jun 1 to 30, 2027 · next Jun 1
- 10 fees due Jul 2 to 30, 2027 · next Jul 2
- 9 fees due Aug 6 to 25, 2027 · next Aug 6
- 24 fees due Sep 1 to 29, 2027 · next Sep 1
- 16 fees due Oct 2 to 30, 2027 · next Oct 2
- 4 fees due Nov 3 to 7, 2027 · next Nov 3
Recent changes
- Oct 21Assignment recorded on 1 record: Nguyenphuoc, Thomas to Psemi Corporation Recorded Oct 21, 2026, executed Jul 16, 2024. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76460, frame 942.
- 29 of the patents on this record were granted since Aug 16, 2026
- 2 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 320 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Switch Circuit and Method of Switching Radio Frequency Signals | 31 in force | to Oct 2031 |
| Dc-Dc Converter with Modular Stages | 22 in force | to Apr 2034 |
| Efficient Gate Drivers for Switched Capacitor Converters | 10 in force | to Mar 2033 |
| Power Amplifier Self-Heating Compensation Circuit | 9 in force | to Feb 2037 |
| RF Switch with Bypass Topology | 9 in force | to Jul 2035 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,536,636 | Tuning Capacitance to Enhance Fet Stack Voltage Withstand In force · High confidence | In force | High confidence | |
| US 9,177,737 | Tuning Capacitance to Enhance Fet Stack Voltage Withstand In force · High confidence | In force | High confidence | |
| US 9,595,956 | Tuning Capacitance to Enhance FET Stack Voltage Withstand In force · High confidence | In force | High confidence | |
| US 9,866,212 | Tuning Capacitance to Enhance Fet Stack Voltage Withstand In force · High confidence | In force | High confidence | |
| US 10,622,992 | Tuning Capacitance to Enhance FET Stack Voltage Withstand In force · High confidence | In force | High confidence | |
| US 10,951,210 | Tuning Capacitance to Enhance FET Stack Voltage Withstand In force · High confidence | In force | High confidence | |
| US 12,166,477 | Tuning Capacitance to Enhance FET Stack Voltage Withstand In force · High confidence | In force | High confidence | |
| US 7,619,462 | Unpowered Switch and Bleeder Circuit In force · High confidence | In force | High confidence | |
| US 7,613,442 | Switch Circuit and Method of Switching Radio Frequency Signals In force · High confidence | In force | High confidence | |
| US 7,890,891 | Method and Apparatus Improving Gate Oxide Reliability by Controlling Accumulated Charge In force · High confidence | In force | High confidence |
Also on record, not counted in the 745: 150 patents in force now held by others · 113 patents ended · 210 applications pending · 37 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.