Lightweight portable moisture traps for use with vacuum pumps

US RE45,937 In force

Overview Sources & methods

Term ends Mar 3, 2031 · From the USPTO record

Computed 20-year base term

Named at grant InstroTek, Inc. · find this owner

Filed Mar 31, 2015 as application 14/674,737 · Granted Mar 22, 2016

Base term plus 246 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Mar 3, 2031

2010 2031

Clock starts
Jun 30, 2010

Term ends
Mar 3, 2031

Granted
Mar 22, 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

246

Days of term adjustment

Read from the original patent's USPTO patent term adjustment record, which governs a reissue. Not recalculated here.

None

Terminal disclaimer

No disclaimer on this record.

3 of 3

Maintenance fees paid

Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from the original patent's grant, which is not on record here. 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 Jun 30, 2010, when the earliest non-provisional application in its chain was filed (this one was filed Mar 31, 2015)	Jun 30, 2030	High confidence
Continuity chain	A reissue: its term follows the original patent's, with the original's term adjustment	follows the original patent	Medium confidence
Patent term adjustment	+246 days, the original patent's USPTO patent term adjustment record, which governs a reissue (35 U.S.C. 251). This reissue's own record carries none	Mar 3, 2031	Medium confidence
Terminal disclaimer cap	None on record	no cap applied	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	3 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Mar 3, 2031	From 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.

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

Lightweight portable moisture traps for use with vacuum pumps

Term ends Mar 3, 2031 · From the USPTO record

20-year base term ends Jun 30, 2030

How we calculated this date

Sources