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US

Method for Writing Data in a Non Volatile Memory Unit

US 7,639,537 In force
OverviewAssignmentsSources & methods

Also listed on Stmicroelectronics, Inc., which filed it. The recorded assignments below show how it moved.

Term ends Aug 1, 2028 · High confidence

Held by Stmicroelectronics International N.V.
Filed Aug 1, 2008 · Granted Dec 29, 2009
Base term, 20 years from filing
Today
20 years from filing
2008 2028
Clock starts
Aug 1, 2008
Term ends
Aug 1, 2028
Granted
Dec 29, 2009
base term fee events Updated Nov 1, 2026 · includes USPTO assignment & status data published Nov 1, 2026 and grant & fee data published Oct 27, 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.

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 Aug 1, 2008Aug 1, 2028High 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 orderAug 1, 2028High confidence

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
Oct 30, 2008
Reel 21764, frame 351
Sepe, Paolo, MR.; Cimino, Carlo, MR.; Chichierchia, MariaIncard S.A.Assignment of Assignor's Interest
Jun 24, 2013
Reel 30669, frame 257
Stmicroelectronics N.V.Stmicroelectronics International N.V.Assignment of Assignor's Interest
Jun 24, 2013
Reel 30669, frame 192
Incard S.A.Stmicroelectronics N.V.Assignment of Assignor's Interest

Sources

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

Maintenance fee events come from USPTO's own fee records. USPTO does not publish a per-patent fee page, so there is nothing to link to.

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Alerts on its grants, lapses and transfers.

What's changing

Citations

426
later US patents cite this one
That is top 1% of utility patents granted in 2009 in our data, the only group it is compared against. How we rank
Every date shows its work: base rule, PTA, PTE, disclaimer caps, fee overlay, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
The Patent Finder CompaniesExpirationsWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 1, 2026 · includes USPTO assignment & status data published Nov 1, 2026 and grant & fee data published Oct 27, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited