Keith Manufacturing Co.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
8
Ending by 2030
Nov 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.
- 2 fees due Jan 16 to 28, 2027 · next Jan 16
- 2 fees due May 12 to 17, 2027 · next May 12
- 1 fee due Sep 8, 2027The maintenance fee for Wear strip assembly for reciprocating conveyor (US 9,278,812) comes due Sep 8, 2027. Unpaid by Mar 8, 2028, it lapses early.
- 1 fee due Oct 7, 2027The maintenance fee for End plug for floor slat (US 10,611,579) comes due Oct 7, 2027. Unpaid by Apr 7, 2028, it lapses early.
Recent changes
- 1 term has ended since Aug 17, 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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,789,218 | Drive/frame assembly for a reciprocating slat conveyor In force · From the USPTO record | In force | From the USPTO record | |
| US 7,556,141 | Cellular base structure for a reciprocating slat conveyor In force · From the USPTO record | In force | From the USPTO record | |
| US 7,604,109 | Releasable connection between members In force · From the USPTO record | In force | From the USPTO record | |
| US 7,510,071 | Reciprocating slat conveyor with cleanout apparatus In force · From the USPTO record | In force | From the USPTO record | |
| US 8,006,828 | Reciprocating slat conveyor with moving slats between fixed slats In force · From the USPTO record | In force | From the USPTO record | |
| US 8,424,674 | Slat conveyor with fixed and movable slats In force · From the USPTO record | In force | From the USPTO record | |
| US 7,815,037 | Lifting/holding slats for a slat conveyor In force · From the USPTO record | In force | From the USPTO record | |
| US 8,083,052 | V-slat reciprocating slat conveyors In force · From the USPTO record | In force | From the USPTO record | |
| US 9,187,257 | V-slat reciprocating slat conveyors In force · From the USPTO record | In force | From the USPTO record | |
| US 9,278,812 | Wear strip assembly for reciprocating conveyor In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 23: 3 lapsed for an unpaid fee · 5 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.
11 no status recorded