The Patent Finder

Cfoam LLC

12 patents currently held · Updated Nov 14, 2026
2 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
11
Ending by 2030
Feb 2027
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 7,824,645High density carbon from coal
In force (reinstated)
 · From the USPTO record
In force (reinstated)From the USPTO record
US 8,034,266Carbon foam from metallic salts of lignosulfonates
In force (reinstated)
 · From the USPTO record
In force (reinstated)From the USPTO record
US 8,071,206Blast energy mitigating composite
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,867,608Electrically gradated carbon foam
In force (reinstated)
 · From the USPTO record
In force (reinstated)From the USPTO record
US 7,883,683Carbon foam and high density carbon foam assembly
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,766,984Method of increasing carbon foam yield
In force (reinstated)
 · From the USPTO record
In force (reinstated)From the USPTO record
US 8,021,638Carbon foam and high density carbon foam composite tooling
In force (reinstated)
 · From the USPTO record
In force (reinstated)From the USPTO record
US 8,071,065High density carbon foam composite tooling
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,902,116Fluid treatment with activated carbon and carbon foam
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,931,961Composite exhaust flue
In force (reinstated)
 · From the USPTO record
In force (reinstated)From the USPTO record
10 of 12 patents shown.
Pro members see all 12.
Pro members: see all 12 patents
Also on record, not counted in the 12: 2 patents in force now held by others · 1 lapsed for an unpaid fee · 15 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.

1 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