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Ozone Disinfection Device, Ozone Disinfection System, and Ozone Disinfection Method

US 12,491,278 In force
OverviewFamilySources & methods

Term ends Jul 16, 2040 · High confidence

Held by Dcstar Inc.
Filed Nov 22, 2024 as application 18/956,940 · Granted Dec 9, 2025
Base term, 20 years from filing
Today
20 years from filing
2020 2040
Clock starts
Jul 16, 2020
Term ends
Jul 16, 2040
Granted
Dec 9, 2025
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.
0 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.
5
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. 0 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 Jul 16, 2020, when application 16/931,157, the earliest non-provisional in its chain, was filed (this one was filed Nov 22, 2024)Jul 16, 2040High 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 events0 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJul 16, 2040High confidence

This family

US 11,000,611In force
Jul 2040
Jul 2040
US 11,730,842In force
no later than Dec 2040
no later than Dec 2040
US 12,194,180In force
Jul 2040
Jul 2040
US 12,491,278this patent
Jul 2040
Jul 2040
Application 19/388,381Pending
not computed
not computed
The applications whose file history this site holds. The family may have others.

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 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