Pe@rl
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Jun 2034
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 8, 2027The maintenance fee for Multi-well system for environmental remediation or sampling (US 11,719,095) comes due Feb 8, 2027. Unpaid by Aug 9, 2027, it lapses early.
- 1 fee due Mar 26, 2027The maintenance fee for Well system with attached sealant line (US 11,767,731) comes due Mar 26, 2027. Unpaid by Sep 27, 2027, it lapses early.
- 1 fee due Sep 17, 2027The maintenance fee for Well sampling system incorporating corrugated and slotted injection system and method of use (US 10,590,765) comes due Sep 17, 2027. Unpaid by Mar 17, 2028, 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.
Showing 1 to 7 of 7
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,252,304 | Soil and Water Contamination Remediation Injector and Method of Use In force · High confidence | In force | High confidence | |
| US 12,305,473 | Well system with attached sealant line In force · From the USPTO record | In force | From the USPTO record | |
| US 11,767,731 | Well system with attached sealant line In force · From the USPTO record | In force | From the USPTO record | |
| US 11,098,555 | Well system with attached sealant line In force · From the USPTO record | In force | From the USPTO record | |
| US 10,590,765 | Well sampling system incorporating corrugated and slotted injection system and method of use In force · From the USPTO record | In force | From the USPTO record | |
| US 11,719,095 | Multi-well system for environmental remediation or sampling In force · From the USPTO record | In force | From the USPTO record | |
| US 10,232,416 | Corrugated and Slotted Injection System and Method of Use In force · High confidence | In force | High confidence |
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.
4 no status recorded