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US

Lithium Extraction in the Presence of Scalants

US 11,358,875 In force
OverviewFamilyAssignmentsSources & methods

Term ends Jun 7, 2041 · High confidence

Filed Jun 30, 2021 as application 17/364,530 · Granted Jun 14, 2022
USPTO first gave this application the number US 11,325,836 and withdrew it before it issued. That number now leads here.
Base term, 20 years from filing
Today
20 years from filing
2021 2041
Clock starts
Jun 7, 2021
Term ends
Jun 7, 2041
Granted
Jun 14, 2022
base term 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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
4
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. 1 of 3 maintenance fees is 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 7, 2021, when application PCT/US2021/036227, the earliest non-provisional in its chain, was filed (this one was filed Jun 30, 2021)Jun 7, 2041High 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 events1 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJun 7, 2041High confidence

This family

Application PCT/US2021/036227PCT application
no patent term
no patent term
US 11,358,875this patent
Jun 2041
Jun 2041
US 11,964,876In force
Jun 2041
Jun 2041
Application 18/484,217Pending
not computed
not computed
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
Sep 15, 2021
Reel 57521, frame 516
Snydacker, David Henry; Indranada, Amos; Lukito, AlysiaLilac Solutions, Inc.Assignment 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.

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