The Patent Finder
US

Table Top Air Purifier

US D745,128 In force
OverviewFamilyAssignmentsSources & methods

Term ends Dec 8, 2029 · High confidence

Filed Aug 13, 2013 as application 29/464,149 · Granted Dec 8, 2015
Base term, 14 years from grant
Today
14 years from grant
2015 2029
Clock starts
Dec 8, 2015
Term ends
Dec 8, 2029
base term 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.
14 years from grant
Base term
No maintenance fees are payable on this kind of patent.
3
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 base term, 14 years from grant, with no adjustment for prosecution delay. No maintenance fees are payable on this kind of patent. 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, 14 years from grantGranted Dec 8, 2015Dec 8, 2029High 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
Computed term endThe steps above, in orderDec 8, 2029High confidence

This family

US D745,128this patent
Dec 2029
Dec 2029
US D759,797In force
Jun 2031
Jun 2031
US D838,354In force
Jan 2034
Jan 2034
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
Jan 8, 2014
Reel 31919, frame 917
Farone, Richard C.Guardian Technologies LLCAssignment of Assignor's Interest
Mar 24, 2017
Reel 41725, frame 904
Guardian Technologies LLCBank Of America, N.a.Security Interest
Mar 28, 2017
Reel 41764, frame 903
Fifth Third BankGuardian Technologies LLCRelease of Security Interest
Dec 15, 2020
Reel 54646, frame 576
Bank Of America, N.a.Guardian Technologies LLCRelease of Security Interest
Jan 13, 2021
Reel 54909, frame 28
Guardian Technologies LLCWells Fargo Bank, National Association, as AgentSecurity Interest
Jan 14, 2021
Reel 54916, frame 364
Guardian Technologies LLCHPS Investment Partners, LLC, as Collateral AgentSecurity Interest
Apr 27, 2021
Reel 56060, frame 971
Guardian Technologies LLCLasko Operation Holdings, LLCAssignment of Assignor's Interest

Sources

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

USPTO account required: This application in Patent Center

No maintenance fees are payable on this kind of patent, so the record carries no fee events.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited