639 patents currently held
63 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 Feb 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
32
Ending by 2030
Feb 2027
Next term end
456
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 Nov 2036 · High confidence
Also notable
Ends Oct 2030 · High confidence
Also notable
Ends Mar 2037 · High confidence
Feedback Voltage DC Level Cancelling for Configurable Output DC-DC Switching Converters
US 10,637,353
Cited by 43 later US patents, top 5% of utility patents granted in 2020 in our data. Protection runs to 2036.
Adaptive Dimmer Detection and Control for LED Lamp
US 8,222,832
The most cited patent in this portfolio, cited by 83 later US patents, top 10% of utility patents granted in 2012 in our data. Protection runs to 2030.
Type III Switching Converter Error Amplifier with Fast Transient Response Behavior
US 10,250,128
Cited by 17 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 2037.
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.
- 9 fees due Dec 16 to 30, 2026 · next Dec 16
- 12 fees due Jan 2 to 30, 2027 · next Jan 2
- 11 fees due Feb 4 to 27, 2027 · next Feb 4
- 10 fees due Mar 1 to 24, 2027 · next Mar 1
- 15 fees due Apr 1 to 29, 2027 · next Apr 1
- 10 fees due May 5 to 26, 2027 · next May 5
- 13 fees due Jun 3 to 30, 2027 · next Jun 3
- 17 fees due Jul 2 to 30, 2027 · next Jul 2
- 4 fees due Aug 4 to 18, 2027 · next Aug 4
- 12 fees due Sep 3 to 30, 2027 · next Sep 3
- 22 fees due Oct 2 to 28, 2027 · next Oct 2
- 3 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- 4 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 456 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Method for Improving the Accuracy of an Exponential Current Digital-to-Analog (IDAC) Using a Binary-Weighted MSB | 28 in force | to Apr 2036 |
| Compact, High Performance, and Robust RC Triggered ESD Clamp | 24 in force | to Dec 2039 |
| Automatic Reference Generator in Switching Boost Converters | 21 in force | to May 2037 |
| Multi-Phase Switching Converter with Phase Shedding | 20 in force | to Dec 2037 |
| High Frequency Common Mode Rejection Technique for Large Dynamic Common Mode Signals | 14 in force | to Jan 2040 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,382,308 | Reference Buffer Using Current Mirrors and Source Followers to Generate Reference Voltages In force · High confidence | In force | High confidence | |
| US 7,474,130 | Compensation of Voltage-To-Current Converter In force · High confidence | In force | High confidence | |
| US 7,916,876 | System and Method for Reconstructing High Frequency Components in Upsampled Audio Signals Using Modulation and Aliasing Techniques held by Dialog Semiconductor B.V. In force · High confidence | In force | High confidence | |
| US 7,505,287 | On-Time Control for Constant Current Mode in a Flyback Power Supply In force · High confidence | In force | High confidence | |
| US 8,063,585 | Power Supply System and Method for the Operation of an Electrical Load In force · High confidence | In force | High confidence | |
| US 7,876,582 | Compensating On-Time Delay of Switching Transistor in Switching Power Converters In force · High confidence | In force | High confidence | |
| US 8,576,586 | Dynamic Drive of Switching Transistor of Switching Power Converter In force · High confidence | In force | High confidence | |
| US 9,525,352 | Magnitude Adjustment of the Drive Signal of a Switching Transistor of a Switching Power Converter In force (reinstated) · Medium confidence | In force (reinstated) | Medium confidence | |
| US 7,511,973 | Constant Current Mode Ripple Attenuation Method in Flyback Power Supply In force · High confidence | In force | High confidence | |
| US 7,589,983 | Power Converter Controller Controlled by Variable Reference Voltage Generated by Dual Output Digital to Analog Converter In force · High confidence | In force | High confidence |
Also on record, not counted in the 639: 63 patents in force now held by others · 99 patents ended · 1 application pending · 38 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.