The Patent Finder
US

Method and morphologically adaptable apparatus for altering the charge distribution upon living membranes with functional stabilization of the membrane physical electrical integrity

US 9,764,154 Lapsed on the fee record
OverviewSources & methods

Lapsed Sep 19, 2025 on the fee record · From the USPTO record

Second maintenance fee unpaid; grace period ended.

Named at grant Gradient Technologies, Inc. · find this owner
Filed Aug 3, 2015 as application 14/816,871 · Granted Sep 19, 2017
Base term, 20 years from filing
Today
Lapsed Sep 19, 2025
2006 2026
Clock starts
Aug 31, 2006
No longer in force
Sep 19, 2025
Granted
Sep 19, 2017
Term would have run to
Aug 31, 2026
base term after the term ends 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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.

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.
Step Input Date after this step Confidence
Base term, 20 years from filingClock starts Aug 31, 2006, when the earliest non-provisional application in its chain was filed (this one was filed Aug 3, 2015)Aug 31, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNo term adjustment record on a grant after 2005, so none is addedno changeMedium confidence
Terminal disclaimer capDisclaimer on file (approved), reference document not resolvedno cap applied, and none guessedMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 2 maintenance fees paidlapsed Sep 19, 2025High confidence
Computed term endThe steps above, in orderSep 19, 2025From the USPTO record

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.

Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.

Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

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