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Catalytic Compositions Comprising the Oxides of Zirconium, Cerium, Yttrium, Lanthanum and Other Rare Earths

US 7,964,527 In force, term unresolved
OverviewFamilyAssignmentsSources & methods

Term ends no later than Mar 14, 2027 · Medium confidence

In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.

Filed Feb 27, 2009 as application 12/279,382 · Granted Jun 21, 2011
Base term plus 29 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2007 2027
Clock starts
Feb 13, 2007
Ends no later than
Mar 14, 2027
Granted
Jun 21, 2011
base term patent term adjustment 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
29
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
2
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 runs 29 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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 Feb 13, 2007, when application PCT/EP2007/051387, the earliest non-provisional in its chain, was filed (this one was filed Feb 27, 2009)Feb 13, 2027High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+29 days, USPTO patent term adjustment recordMar 14, 2027High confidence
Terminal disclaimer capDisclaimer on file (approved), reference document not resolvedno cap applied, and none guessedMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderno later than Mar 14, 2027Medium confidence

This family

US 7,964,527this patent
no later than Mar 2027
no later than Mar 2027
1 of 2 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
Feb 27, 2009
Reel 22325, frame 771
Larcher, Olivier; Verdier, Stephan; Rohart, Emmanuel; Huang, AiminRhodia OperationsAssignment of Assignor's Interest

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.

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