Allen Engineering Corp.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 5 name spellings.
2
Ending by 2030
Dec 2028
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 Feb 20, 2027The maintenance fee for Steering responsive speed-controlled buggy (US 10,384,704) comes due Feb 20, 2027. Unpaid by Aug 20, 2027, it lapses early.
- 1 fee due Mar 26, 2027The maintenance fee for Versatile light rail bed paver (US 11,767,643) comes due Mar 26, 2027. Unpaid by Sep 27, 2027, it lapses early.
- 1 fee due May 21, 2027The maintenance fee for Electric concrete transportation cart (US 11,820,381) comes due May 21, 2027. Unpaid by Nov 22, 2027, it lapses early.
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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,690,864 | Hydraulic riding trowel with automatic load sensing system In force · From the USPTO record | In force | From the USPTO record | |
| US 8,360,680 | Hydraulic riding trowels with automatic load sensing In force · From the USPTO record | In force | From the USPTO record | |
| US 9,068,301 | Single to Dual Stick Trowel and Steering Conversion In force · High confidence | In force | High confidence | |
| US D918,519 | Electric concrete transportation cart In force · From the USPTO record | In force | From the USPTO record | |
| US D918,520 | Electric concrete transportation cart In force · From the USPTO record | In force | From the USPTO record | |
| US 10,384,704 | Steering responsive speed-controlled buggy In force · From the USPTO record | In force | From the USPTO record | |
| US 10,100,537 | Ventilated high capacity hydraulic riding trowel In force · From the USPTO record | In force | From the USPTO record | |
| US 11,326,359 | Concrete surface polishing trowel and conversion adaptor In force · From the USPTO record | In force | From the USPTO record | |
| US 11,619,010 | Roller tube concrete paver with retractable vibrator assembly In force · From the USPTO record | In force | From the USPTO record | |
| US 11,767,643 | Versatile light rail bed paver In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 12: 11 lapsed for an unpaid fee · 69 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.
2 abandoned · 2 no status recorded