The Patent Finder
US

Electronic Device

US 8,633,591 In force
OverviewFamilyAssignmentsSources & methods

Term ends Oct 2, 2027 · High confidence

Filed Dec 12, 2012 as application 13/712,224 · Granted Jan 21, 2014
Base term, 20 years from filing
Today
20 years from filing
2007 2027
Clock starts
Oct 2, 2007
Term ends
Oct 2, 2027
Granted
Jan 21, 2014
base term fee events Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
10
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Oct 2, 2007, when application 11/865,745, the earliest non-provisional in its chain, was filed (this one was filed Dec 12, 2012)Oct 2, 2027High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderOct 2, 2027High confidence

This family

US 8,354,340In force
Mar 2029
Mar 2029
US 8,633,591this patent
Oct 2027
Oct 2027
US 8,823,174In force
Oct 2027
Oct 2027
US 8,975,750In force
Oct 2027
Oct 2027
US 9,406,602In force
Oct 2027
Oct 2027
Application 15/191,774Abandoned
not computed
not computed
US 9,847,325In force
Oct 2027
Oct 2027
US 10,224,318In force
Oct 2027
Oct 2027
8 of 10 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Dec 26, 2012
Reel 29526, frame 444
Kurita, Yoichiro; Kawano, Masaya; Soejima, KojiNEC Electronics CorporationAssignment of Assignor's Interest
Dec 26, 2012
Reel 29526, frame 464
NEC Electronics CorporationRenesas Electronics CorporationChange of Name
Nov 29, 2017
Reel 44928, frame 1
Renesas Electronics CorporationRenesas Electronics CorporationChange of Address

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited