Presssol Ltd.
Records under this name other than patents Presssol Ltd. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,540,325 | Well cementing apparatus and method Term ended Term ended Apr 15, 2026 · From the USPTO record | Term ended | Term ended Apr 15, 2026 | From the USPTO record |
| US 7,343,983 | Method and apparatus for isolating and testing zones during reverse circulation drilling Term ended Term ended Jul 24, 2025 · From the USPTO record | Term ended | Term ended Jul 24, 2025 | From the USPTO record |
| US 8,408,337 | Downhole blowout preventor Term ended Ended no later than Feb 11, 2025 · From the USPTO record | Term ended | Ended no later than Feb 11, 2025 | From the USPTO record |
| US 7,066,283 | Reverse circulation directional and horizontal drilling using concentric coil tubing Term ended Term ended Aug 21, 2023 · From the USPTO record | Term ended | Term ended Aug 21, 2023 | From the USPTO record |
| US 7,204,327 | Reverse circulation directional and horizontal drilling using concentric drill string Term ended Ended no later than Aug 21, 2023 · From the USPTO record | Term ended | Ended no later than Aug 21, 2023 | From the USPTO record |
| US 7,090,018 | Reverse circulation clean out system for low pressure gas wells Term ended Ended no later than Jul 21, 2023 · From the USPTO record | Term ended | Ended no later than Jul 21, 2023 | From the USPTO record |
| US 7,017,682 | Drill string shutoff valve Term ended Term ended Jul 14, 2023 · From the USPTO record | Term ended | Term ended Jul 14, 2023 | From the USPTO record |
| US 7,090,033 | Drill string shutoff valve Term ended Term ended Jun 21, 2023 · From the USPTO record | Term ended | Term ended Jun 21, 2023 | From the USPTO record |
| US 6,918,452 | Drill string shutoff valve Term ended Term ended Apr 27, 2023 · From the USPTO record | Term ended | Term ended Apr 27, 2023 | From the USPTO record |
| US 6,892,829 | Two string drilling system Term ended Term ended Feb 2, 2023 · From the USPTO record | Term ended | Term ended Feb 2, 2023 | From the USPTO record |