Sigelock Systems, LLC
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
3
Ending by 2030
Jun 2029
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.
- 2 fees due Feb 11 to 18, 2027 · next Feb 11
Recent changes
- 2 terms have 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 6 of 6
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,967,184 | Locking Fire Hydrant In force · Medium confidence | In force | Medium confidence | |
| US 9,382,696 | Locking Fire Hydrant In force · High confidence | In force | High confidence | |
| US 9,103,101 | Fire Hydrant Control Valve In force · High confidence | In force | High confidence | |
| US 8,365,759 | Locking Fire Hydrant In force · High confidence | In force | High confidence | |
| US 8,640,728 | Fire Hydrant Control Valve In force · High confidence | In force | High confidence | |
| US 9,108,076 | Fire Hydrant Locking Sprinkler Cap, Hydrant Valve Seals and Lubrication Access In force · High confidence | In force | High confidence |
Also on record, not counted in the 6: 2 lapsed for an unpaid fee. 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
Every application published under this name has become a patent.