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Method for Using Tracer Flowback for Estimating Influx Volumes of Fluids from Different Influx Zones

US 8,949,029 In force
OverviewFamilyAssignmentsSources & methods

Term ends Oct 31, 2031 · High confidence

Filed Jun 20, 2013 as application 13/882,054 · Granted Feb 3, 2015
Base term, 20 years from filing
Today
20 years from filing
2011 2031
Clock starts
Oct 31, 2011
Term ends
Oct 31, 2031
Granted
Feb 3, 2015
base term fee events 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
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.
7
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 31, 2011, when application PCT/NO2011/000306, the earliest non-provisional in its chain, was filed (this one was filed Jun 20, 2013)Oct 31, 2031High 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 31, 2031High confidence

This family

US 10,253,619In force
Dec 2035
Dec 2035
US 8,949,029this patent
Oct 2031
Oct 2031
US 10,669,839In force
Oct 2031
Oct 2031
US 10,961,842In force
Oct 2031
Oct 2031
US 10,871,067In force
Oct 2031
Oct 2031
US 11,674,382In force
no later than Feb 2032
no later than Feb 2032
6 of 7 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
Jun 20, 2013
Reel 30666, frame 313
Nyhavn, FridtjofResman AsAssignment of Assignor's Interest
Apr 15, 2026
Reel 74377, frame 798
Resman AsResman Technology AsAssignment 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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