Tejas Research & Engineering, LLC
Records under this name other than the patents Tejas Research & Engineering, LLC holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 19 patents it holds.
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| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,631,664 | Threaded Expansion Plugs Formerly held In force · High confidence | In force | High confidence | |
| US 9,784,057 | Mechanical Bi-Directional Isolation Valve Formerly held In force · High confidence | In force | High confidence | |
| US 10,724,332 | Low-Power Electric Safety Valve Formerly held In force · High confidence | In force | High confidence | |
| US 8,579,024 | Non-Damaging Slips and Drillable Bridge Plug Formerly held Lapsed on the fee record Ended Nov 12, 2025 · Medium confidence | Lapsed on the fee record | Ended Nov 12, 2025 | Medium confidence |
| US 10,458,203 | Pressure cycle actuated injection valve Lapsed on the fee record Ended Oct 29, 2023 · From the USPTO record | Lapsed on the fee record | Ended Oct 29, 2023 | From the USPTO record |
| US 10,309,201 | Method, apparatus, and system for injecting chemicals into lower tertiary wells Lapsed on the fee record Ended Jun 4, 2023 · From the USPTO record | Lapsed on the fee record | Ended Jun 4, 2023 | From the USPTO record |
| US 10,294,755 | Dual barrier injection valve with a variable orifice Lapsed on the fee record Ended May 21, 2023 · From the USPTO record | Lapsed on the fee record | Ended May 21, 2023 | From the USPTO record |
| US 10,053,936 | Thermal compensating tubing anchor for a pumpjack well Lapsed on the fee record Ended Aug 21, 2022 · From the USPTO record | Lapsed on the fee record | Ended Aug 21, 2022 | From the USPTO record |
| US 6,854,519 | Subsurface Valve with System and Method for Sealing Formerly held Term ended Term ended May 3, 2022 · High confidence | Term ended | Term ended May 3, 2022 | High confidence |
| US 9,920,593 | Dual barrier injection valve with a variable orifice Lapsed on the fee record Ended Mar 20, 2022 · From the USPTO record | Lapsed on the fee record | Ended Mar 20, 2022 | From the USPTO record |