Tejas Research & Engineering, LLC
3 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.
0
Ending by 2030
Nov 2032
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 Dec 4, 2026The maintenance fee for High flow downhole lock (US 10,309,175) comes due Dec 4, 2026. Unpaid by Jun 4, 2027, it lapses early.
- 2 fees due Feb 11 to 13, 2027 · next Feb 11
- 1 fee due Mar 15, 2027The maintenance fee for Integral multiple stage safety valves (US 9,133,688) comes due Mar 15, 2027. Unpaid by Sep 15, 2027, it lapses early.
- 1 fee due Jun 22, 2027The maintenance fee for Wireline retrievable injection valve assembly with a variable orifice (US 9,217,312) comes due Jun 22, 2027. Unpaid by Dec 22, 2027, it lapses early.
- 1 fee due Nov 10, 2027The maintenance fee for Tubing retrievable injection valve assembly (US 9,334,709) comes due Nov 10, 2027. Unpaid by May 10, 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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,523,260 | Dual barrier injection valve In force · From the USPTO record | In force | From the USPTO record | |
| US 9,624,755 | Wireline retrievable injection valve assembly with a variable orifice In force · From the USPTO record | In force | From the USPTO record | |
| US 9,771,777 | Tubing retrievable injection valve assembly In force · From the USPTO record | In force | From the USPTO record | |
| US 10,030,476 | Tubing retrievable injection valve assembly In force · From the USPTO record | In force | From the USPTO record | |
| US 10,378,312 | Tubing retrievable injection valve assembly In force · From the USPTO record | In force | From the USPTO record | |
| US 10,704,361 | Method and apparatus for injecting fluid into spaced injection zones in an oil/gas well In force · From the USPTO record | In force | From the USPTO record | |
| US 10,018,022 | Method and apparatus for injecting fluid into spaced injection zones in an oil/gas well In force · From the USPTO record | In force | From the USPTO record | |
| US 9,133,688 | Integral multiple stage safety valves In force · From the USPTO record | In force | From the USPTO record | |
| US 8,960,298 | Deep set subsurface safety system In force · From the USPTO record | In force | From the USPTO record | |
| US 9,217,312 | Wireline retrievable injection valve assembly with a variable orifice In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 19: 3 patents in force now held by others · 8 lapsed for an unpaid fee · 3 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.
3 abandoned · 8 no status recorded