Compressed Air Aftercooler With Integral Moisture Separator

US 9,453,692 In force

Overview Sources & methods

Term ends Feb 20, 2028 · High confidence

Computed 20-year base term

Held by API Heat Transfer, Inc.

Filed Mar 11, 2008 as application 11/722,042 · Granted Sep 27, 2016

Base term plus 797 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Feb 20, 2028

2005 2028

Clock starts
Dec 15, 2005

Term ends
Feb 20, 2028

Granted
Sep 27, 2016

base term patent term adjustment 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

797

Days of term adjustment

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

None

Terminal disclaimer

No disclaimer on this record.

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 Dec 15, 2005, when the earliest non-provisional application in its chain was filed (this one was filed Mar 11, 2008)	Dec 15, 2025	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+797 days, USPTO patent term adjustment record	Feb 20, 2028	High confidence
Terminal disclaimer cap	None on record	no cap applied	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 2 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Feb 20, 2028	High 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.

In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.

Compressed Air Aftercooler With Integral Moisture Separator

Term ends Feb 20, 2028 · High confidence

20-year base term ended Dec 15, 2025

How we calculated this date

Sources