Tescom Corporation
11 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.
Recorded under 2 name spellings.
19
Ending by 2030
Jan 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 Nov 16, 2026The maintenance fee for Control valve (US 11,649,896) comes due Nov 16, 2026. Unpaid by May 17, 2027, it lapses early.
- 4 fees due Dec 13 to 16, 2026 · next Dec 13
- 3 fees due Feb 4 to 20, 2027 · next Feb 4
- 4 fees due Mar 8 to 22, 2027 · next Mar 8
- 4 fees due Apr 6 to 27, 2027 · next Apr 6
- 1 fee due May 3, 2027The maintenance fee for Top Drive with Mounted Winch (US 9,175,526) comes due May 3, 2027. Unpaid by Nov 3, 2027, it lapses early.
- 1 fee due Sep 1, 2027The maintenance fee for Downhole Slot Cutter (US 9,273,540) comes due Sep 1, 2027. Unpaid by Mar 1, 2028, it lapses early.
Recent changes
- 4 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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,673,675 | Pipe Handling Device and Safety Mechanism In force · High confidence | In force | High confidence | |
| US 7,658,366 | High-pressure bi-directional valve In force · From the USPTO record | In force | From the USPTO record | |
| US 7,654,313 | Method and Assembly for Casing Handling Using a Kelly Rig In force · High confidence | In force | High confidence | |
| US 7,828,009 | Pressure Reducing Regulator with Adjustable Feature In force · High confidence | In force | High confidence | |
| US 7,832,487 | Casing Stabbing Guide In force · High confidence | In force | High confidence | |
| US 7,757,710 | High-Pressure Regulator In force · High confidence | In force | High confidence | |
| US 7,784,551 | Tubular Handling Device In force · High confidence | In force | High confidence | |
| US 7,854,265 | Pipe Gripping Assembly with Power Screw Actuator and Method of Gripping Pipe on a Rig In force · High confidence | In force | High confidence | |
| US 7,845,431 | Retrieval tool with slips for retrieving bottom hole assembly during casing while drilling operations In force · From the USPTO record | In force | From the USPTO record | |
| US 7,845,417 | Method of circulating while retrieving downhole tool in casing In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 88: 11 patents in force now held by others · 68 lapsed for an unpaid fee · 62 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.
5 abandoned · 13 no status recorded