Sentry Equipment Corp.
4 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.
2
Ending by 2030
May 2027
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Jan 23, 2027The maintenance fee for Pipeline sampler (US 10,359,342) comes due Jan 23, 2027. Unpaid by Jul 23, 2027, it lapses early.
Recent changes
- 1 term has ended since Aug 16, 2026
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.
Showing 1 to 7 of 7
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,481,124 | Positive-displacement sampling apparatus In force · From the USPTO record | In force | From the USPTO record | |
| US 7,984,660 | Pipeline sampling device In force · From the USPTO record | In force | From the USPTO record | |
| US RE46,378 | Assembly for insertion of an object into a pipeline In force · From the USPTO record | In force | From the USPTO record | |
| US 10,359,342 | Pipeline sampler In force · From the USPTO record | In force | From the USPTO record | |
| US 10,288,466 | Flow Totalizer In force · High confidence | In force | High confidence | |
| US 10,737,954 | Water treatment skimmer apparatus and system In force · From the USPTO record | In force | From the USPTO record | |
| US 10,808,888 | Vessel and pipeline insertion tool In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 7: 4 patents in force now held by others · 1 lapsed for an unpaid fee · 24 ended at full term · 1 surrendered on reissue. 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