18 patents currently held

612 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.

120 more records may belong here and await a decision; they are not counted.

The next term ends in Dec 2026. from the record

Of the 612 now held by other companies, 274 name Socionext Inc. as their current owner, and 338 more name another party. Each row says which.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Dec 2026

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026 2027 2028202920302031 2032 2033 203420352036203720382039204020412042204320442045

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

Semiconductor Device and Power Supply Apparatus US 8,536,622

The most cited patent in this portfolio, cited by 32 later US patents, top 25% of utility patents granted in 2013 in our data. Protection runs to 2031.

Ends Jul 2031 · High confidence Also notable

Compound Semiconductor Device and Method of Manufacturing Same US 9,099,545

Granted 2015 and renewed at every maintenance window due so far. Protection runs to 2031.

Ends Apr 2031 · High confidence Also notable

Semiconductor Device and Method of Manufacturing the Same US 7,592,657

Renewed at every maintenance window since the 2009 grant; no more fees are due before its term ends in 2026.

Ends Dec 2026 · High confidence

Formerly held, still cited

Notable

Scheduling in a multicore processor US 8,732,439

The most cited patent in this portfolio, cited by 121 later US patents, top 5% of utility patents granted in 2014 in our data. Protection runs to 2028. A terminal disclaimer caps this term to an earlier patent's.

now held by Mips Holding, Inc.

Ends Feb 2028 · High confidence

Also notable

Secure Processor and a Program for a Secure Processor US 7,865,733

Cited by 72 later US patents, top 10% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.

now held by Socionext Inc.

Ends Aug 2028 · High confidence

Also notable

Debug in a Multicore Architecture US 9,038,070

Cited by 55 later US patents, top 10% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2030.

now held by Mips Holding, Inc.

Ends Jun 2030 · High confidence

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 14, 2027
The maintenance fee for Semiconductor Device and Test Method (US 9,081,050) comes due Jan 14, 2027. Unpaid by Jul 14, 2027, it lapses early.
1 fee due Feb 4, 2027
The maintenance fee for Compound Semiconductor Device and Method of Manufacturing Same (US 9,099,545) comes due Feb 4, 2027. Unpaid by Aug 4, 2027, it lapses early.
1 fee due May 3, 2027
The maintenance fee for Circuitry and Methods for Use in Mixed-Signals Circuitry (US 9,178,523) comes due May 3, 2027. Unpaid by Nov 3, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 16, 2026
34 terms have ended since Aug 16, 2026

What they patent

The 5 largest of its 17 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Reset Circuit and System Having Reset Circuit	2 in force	to May 2028
Method for Fabricating a Transistor Device with a Tuned Dopant Profile	1 in force	to Mar 2033
Semiconductor Device and Test Method	1 in force	to May 2032
Semiconductor Device and Power Supply Apparatus	1 in force	to Jul 2031
Method of Manufacturing a Ferroelectric Capacitor and a Ferroelectric Capacitor	1 in force	to May 2031

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,592,657	Semiconductor Device and Method of Manufacturing the Same held by Fujitsu Semiconductor Memory Solution Limited In force Term ends Dec 7, 2026 · High confidence	In force	Term ends Dec 7, 2026	High confidence
US 7,392,947	Noncontact Tag, Control Method Therefor and Noncontact Id Identification System held by Fujitsu Semiconductor Memory Solution Limited In force Term ends Dec 30, 2026 · High confidence	In force	Term ends Dec 30, 2026	High confidence
US 7,514,272	Method of Manufacturing Ferroelectric Memory Device held by Fujitsu Semiconductor Memory Solution Limited In force Term ends Mar 13, 2027 · High confidence	In force	Term ends Mar 13, 2027	High confidence
US 7,547,629	Ferroelectric Capacitor and Its Manufacturing Method and Ferroelectric Memory Device held by Fujitsu Semiconductor Memory Solution Limited In force Term ends Jun 14, 2027 · High confidence	In force	Term ends Jun 14, 2027	High confidence
US 7,577,012	Ferroelectric Memory Device, Method for Driving Ferroelectric Memory Device, Electronic Apparatus, and Method for Driving Electronic Apparatus held by Fujitsu Semiconductor Memory Solution Limited In force Term ends Oct 28, 2027 · High confidence	In force	Term ends Oct 28, 2027	High confidence
US 7,893,735	Reset Circuit and System Having Reset Circuit held by Fujitsu Semiconductor Memory Solution Limited In force Term ends Nov 26, 2027 · High confidence	In force	Term ends Nov 26, 2027	High confidence
US 7,633,831	Semiconductor Memory and Operating Method of Same held by Fujitsu Semiconductor Memory Solution Limited In force Term ends Dec 31, 2027 · High confidence	In force	Term ends Dec 31, 2027	High confidence
US 7,746,718	Semiconductor Memory, Operating Method of Semiconductor Memory, Memory Controller, and System held by Fujitsu Semiconductor Memory Solution Limited In force Term ends Jan 22, 2028 · High confidence	In force	Term ends Jan 22, 2028	High confidence
US 7,605,007	Semiconductor Device and Method of Manufacturing the Same held by Fujitsu Semiconductor Memory Solution Limited In force Term ends May 10, 2028 · High confidence	In force	Term ends May 10, 2028	High confidence
US 7,659,758	Reset Circuit and System Having Reset Circuit held by Fujitsu Semiconductor Memory Solution Limited In force Term ends May 23, 2028 · High confidence	In force	Term ends May 23, 2028	High confidence

10 of 18 patents shown.

Pro members see all 18.

Pro members: see all 18 patents

Also on record, not counted in the 18: 612 patents in force now held by others · 3,290 patents ended · 1 application pending · 377 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.

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Fujitsu Semiconductor Limited