The Patent Finder

Proof Research, Inc.

16 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Aug 2034
Next term end

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

No maintenance fee falls due on this company's record before Nov 14, 2027.

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
PatentTitleStatus Expires Confidence
US 9,863,732Lightweight composite mortar tube
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,168,117Fiber winding system for composite projectile barrel structure
In force
 · From the USPTO record
In forceFrom the USPTO record
US D900,948Surface pattern of a firearm barrel
In force
 · From the USPTO record
In forceFrom the USPTO record
US D921,817Surface pattern of a firearm barrel
In force
 · From the USPTO record
In forceFrom the USPTO record
US D921,818Surface pattern of a firearm barrel
In force
 · From the USPTO record
In forceFrom the USPTO record
US D921,819Surface pattern of a firearm barrel
In force
 · From the USPTO record
In forceFrom the USPTO record
US D921,820Surface pattern of a firearm barrel
In force
 · From the USPTO record
In forceFrom the USPTO record
US D921,821Surface pattern of a firearm barrel
In force
 · From the USPTO record
In forceFrom the USPTO record
US D921,822Surface pattern of a firearm barrel
In force
 · From the USPTO record
In forceFrom the USPTO record
US D921,823Surface pattern of a firearm barrel
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 16 patents shown.
Pro members see all 16.
Pro members: see all 16 patents
Also on record, not counted in the 16: 1 ended at full term. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

2 no status recorded

List them

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