8 patents currently held
102 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 Aug 2028. from the record
Of the 102 now held by other companies, 100 name Littelfuse Inc. as their current owner, and 2 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
5
Ending by 2030
Aug 2028
Next term end
6
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 no later than Dec 2028 · Low confidence
Also notable
Ends Nov 2028 · High confidence
Also notable
Ends Jan 2032 · Medium confidence
Loading a Machine Code API onto an 8-BIT Virtual Machine to Enable New Functionality
US 8,952,840
The largest patent family in this portfolio, 6 related applications, renewed at every maintenance window due so far. 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.
Automatic Determination and Retrieval of a Favorite Channel
US 11,736,770
A family of 6 related applications built on the 2023 grant. Protection runs to 2028.
Discrete Power Transistor Package Having Solderless DBC to Leadframe Attach
US 11,387,162
Granted 2022. Computed term ends 2032.
Formerly held, still cited
Notable
Ends Apr 2031 · High confidence
The most cited patent in this portfolio, cited by 49 later US patents, top 25% of utility patents granted in 2013 in our data. Protection runs to 2031.
now held by Universal Electronics Inc.
Also notable
Ends Aug 2032 · High confidence
Cited by 26 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2032.
now held by Littelfuse, Inc.
Also notable
Ends Sep 2030 · High confidence
Cited by 28 later US patents, top 25% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030.
now held by Littelfuse, Inc.
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.
- 1 fee due Jan 21, 2027The maintenance fee for 1-WIRE Communication Protocol and Interface Circuit for High Voltage Applications (US 9,089,025) comes due Jan 21, 2027. Unpaid by Jul 21, 2027, it lapses early.
- 1 fee due Feb 22, 2027The maintenance fee for Automatic Determination and Retrieval of a Favorite Channel (US 11,736,770) comes due Feb 22, 2027. Unpaid by Aug 23, 2027, it lapses early.
Recent changes
- 2 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 6 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Automatic Determination and Retrieval of a Favorite Channel | 3 in force | to Apr 2029 |
| Fast Recovery Inverse Diode | 1 in force | to Jul 2037 |
| Discrete Power Transistor Package Having Solderless DBC to Leadframe Attach | 1 in force | to Jan 2032 |
| 1-WIRE Communication Protocol and Interface Circuit for High Voltage Applications | 1 in force | to Jan 2031 |
| Loading a Machine Code API onto an 8-BIT Virtual Machine to Enable New Functionality | 1 in force | to Dec 2028 |
Patents held now
Soonest term end first.
Showing 1 to 8 of 8
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,873,769 | Micro Controller Unit (MCU) Capable of Increasing Data Retention Time and Method of Driving the Mcu held by Ixys Intl Limited In force · High confidence | In force | High confidence | |
| US 8,941,531 | Automatic Determination and Retrieval of a Favorite Channel held by Ixys CH GmbH In force · High confidence | In force | High confidence | |
| US 11,736,770 | Automatic Determination and Retrieval of a Favorite Channel held by Ixys CH GmbH In force · High confidence | In force | High confidence | |
| US 8,952,840 | Loading a Machine Code API onto an 8-BIT Virtual Machine to Enable New Functionality held by Ixys Intl Limited In force · Low confidence | In force | Low confidence | |
| US 9,712,875 | Automatic Determination and Retrieval of a Favorite Channel held by Ixys CH GmbH In force · High confidence | In force | High confidence | |
| US 9,089,025 | 1-WIRE Communication Protocol and Interface Circuit for High Voltage Applications In force · High confidence | In force | High confidence | |
| US 11,387,162 | Discrete Power Transistor Package Having Solderless DBC to Leadframe Attach In force · Medium confidence | In force | Medium confidence | |
| US 10,847,658 | Fast Recovery Inverse Diode In force · Medium confidence | In force | Medium confidence |
Also on record, not counted in the 8: 102 patents in force now held by others · 81 patents ended · 6 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.