The record carries a change of name from this company to Minebea Mitsumi Inc., 254 recordings between Jul 26, 2017 and Oct 9, 2019. This page keeps the records filed under this name.
123 patents currently held
270 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.
8 more records may belong here and await a decision; they are not counted.
The next term ends in Jan 2027. from the record
Of the 270 now held by other companies, 265 name Minebea Mitsumi Inc. as their current owner, and 5 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
20
Ending by 2030
Jan 2027
Next term end
117
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 May 2028 · High confidence
Also notable
Ends Jan 2031 · High confidence
Also notable
Ends Dec 2028 · High confidence
Semiconductor Power Module Including Epoxy Resin Coating
US 8,004,075
Cited by 28 later US patents, top 25% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
Manufacturing Method of Semiconductor Device
US 8,445,352
Cited by 23 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 2031.
Apparatus and Method for Driving Synchronous Motor
US 7,839,113
Renewed at every maintenance window since the 2010 grant; no more fees are due before its term ends in 2028.
Formerly held, still cited
Notable
Ends Sep 2033 · High confidence
Cited by 44 later US patents, top 10% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2033.
now held by Minebea Mitsumi Inc.
Also notable
Ends May 2034 · High confidence
Cited by 22 later US patents, top 25% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2034.
now held by Minebea Mitsumi Inc.
Also notable
Ends Jan 2030 · High confidence
Renewed at every maintenance window since the 2012 grant; no more fees are due before its term ends in 2030.
now held by Schroff Technologies International, 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 Nov 28, 2026The maintenance fee for Semiconductor Device and Alternator Using Same (US 10,304,761) comes due Nov 28, 2026. Unpaid by May 28, 2027, it lapses early.
- 1 fee due Dec 11, 2026The maintenance fee for Semiconductor Device, and Alternator and Power Conversion Device Which Use Same (US 10,319,849) comes due Dec 11, 2026. Unpaid by Jun 11, 2027, it lapses early.
- 2 fees due Jan 7 to 14, 2027 · next Jan 7
- 2 fees due Feb 6 to 22, 2027 · next Feb 6
- 1 fee due Apr 1, 2027The maintenance fee for Vibrator Unit and Vibration Generator (US 10,432,074) comes due Apr 1, 2027. Unpaid by Oct 1, 2027, it lapses early.
- 1 fee due May 17, 2027The maintenance fee for Semiconductor Device and Ultrasonic Diagnostic Apparatus Using the Same (US 9,190,992) comes due May 17, 2027. Unpaid by Nov 17, 2027, it lapses early.
- 1 fee due Jun 30, 2027The maintenance fee for Semiconductor Chip and Power Module, and Manufacturing Method of the Same (US 10,522,638) comes due Jun 30, 2027. Unpaid by Jan 3, 2028, it lapses early.
- 2 fees due Jul 7 to 23, 2027 · next Jul 7
- 1 fee due Sep 26, 2027The maintenance fee for Semiconductor Device and Power Conversion Device (US 11,942,512) comes due Sep 26, 2027. Unpaid by Mar 27, 2028, it lapses early.
- 2 fees due Oct 9 to 26, 2027 · next Oct 9
Recent changes
- 13 of the patents on this record were granted since Aug 16, 2026
- 7 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 117 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| SEMICONDUCTOR DEVlCE WITH SIMILAR IMPURITY CONCENTRATION JTE REGIONS | 2 in force | to Dec 2033 |
| Semiconductor Device and Power Conversion Apparatus Using the Same | 2 in force | to Sep 2031 |
| Manufacturing Method of Semiconductor Device | 2 in force | to Jan 2031 |
| Apparatus and Method for Driving Synchronous Motor | 2 in force | to Dec 2028 |
| Semiconductor Power Module Including Epoxy Resin Coating | 2 in force | to May 2028 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,964,492 | Semiconductor Device and Automotive Ac Generator In force · Medium confidence | In force | Medium confidence | |
| US 8,125,090 | Semiconductor Power Module In force · High confidence | In force | High confidence | |
| US 8,304,889 | Power Semiconductor Module and Fabrication Method Thereof In force · Medium confidence | In force | Medium confidence | |
| US 8,283,763 | Power Semiconductor Module and Fabrication Method Thereof In force · Medium confidence | In force | Medium confidence | |
| US 8,035,330 | Apparatus and Method for Driving Synchronous Motor In force · High confidence | In force | High confidence | |
| US 7,710,064 | Semiconductor Device for Motor Driving and Motor Having the Same, Motor Driving Apparatus and Air Conditioner In force · High confidence | In force | High confidence | |
| US 7,619,385 | Motor Controller, Washing Machine, Air Conditioner and Electric Oil Pump In force · High confidence | In force | High confidence | |
| US 8,004,075 | Semiconductor Power Module Including Epoxy Resin Coating In force · High confidence | In force | High confidence | |
| US 7,839,113 | Apparatus and Method for Driving Synchronous Motor In force · High confidence | In force | High confidence | |
| US 7,928,587 | Power Semiconductor Module In force · High confidence | In force | High confidence |
Also on record, not counted in the 123: 270 patents in force now held by others · 698 patents ended · 133 applications pending · 282 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.