Fire Resistant Composite Material And Fabrics Made Therefrom

US 8,822,356 Term ended

Overview Sources & methods

Term ended Jun 9, 2025 · Medium confidence

Computed 20-year base term

USPTO later recorded it as expired for non-payment on Oct 5, 2026.

Named at grant ElkCorp · find this owner

Filed Aug 30, 2010 as application 12/871,272 · Granted Sep 2, 2014

Base term plus 322 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer

Today

20 years from filing

Term ended Jun 9, 2025

2005 2026

Clock starts
Mar 22, 2005

Term ended
Jun 9, 2025

Granted
Sep 2, 2014

base term patent term adjustment 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

322

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

Capped

Terminal disclaimer

Resolved from the filed document, referencing US 8,822,355, US 8,987,149.

2 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 filing	Clock starts Mar 22, 2005, when the earliest non-provisional application in its chain was filed (this one was filed Aug 30, 2010)	Mar 22, 2025	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+322 days, USPTO patent term adjustment record	Feb 7, 2026	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 8,822,355, US 8,987,149)	capped to Jun 9, 2025	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 2 maintenance fees paid	term ended	High confidence
USPTO status record	Recorded as expired for non-payment on Oct 5, 2026, after the term ended	no change	High confidence
Further caveats on record	The record rates this date lower than the steps above account for	Medium confidence overall	Medium confidence
Computed term end	The steps above, in order	Jun 9, 2025	Medium confidence

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.

Fire Resistant Composite Material And Fabrics Made Therefrom

Term ended Jun 9, 2025 · Medium confidence

20-year base term ended Mar 22, 2025

How we calculated this date

Sources