The Patent Finder
US

Axial and Circumferential Flaw Sensing Eddy Current Probe

US 9,267,921 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Jul 30, 2025 (Zetec, Inc.).

Term ends Jan 7, 2033 · High confidence

Held by Zetec, Inc.
Filed Jun 29, 2012 as application 13/537,649 · Granted Feb 23, 2016
Base term plus 192 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2012 2033
Clock starts
Jun 29, 2012
Term ends
Jan 7, 2033
Granted
Feb 23, 2016
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
192
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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 192 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Jun 29, 2012, when this application, 13/537,649, was filedJun 29, 2032High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+192 days, USPTO patent term adjustment recordJan 7, 2033High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJan 7, 2033High confidence

This family

US 9,267,921this patent
Jan 2033
Jan 2033
Application PCT/US2013/047839PCT application
no patent term
no patent term
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
Aug 21, 2012
Reel 28820, frame 576
Michaeu-cunningham, Jevne Branden; Sood, Anil; Timm, Steve; Ziegenhagen, William; Tarango, PaulineZetec, Inc.Assignment of Assignor's Interest
Mar 15, 2023
Reel 62983, frame 469
Zetec, Inc.National Bank of CanadaSecurity Interest
Jun 5, 2025
Reel 71328, frame 530
Previan Technologies Inc.; Pavemetrics Systems Inc.; Eddyfi Canada Inc.; Zetec, Inc.; Eddyfi Robotics Inc.; Eddyfi Corp.; Eddyfi UK Limited; Senceive LimitedNational Bank of CanadaSecurity Interest
Jul 30, 2025
Reel 71881, frame 566
National Bank of CanadaZetec, Inc.Security Interest
Jun 3, 2026
Reel 74843, frame 323
National Bank of CanadaZetec Inc.Release of Security 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.

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