Subsurface Technology As
Records under this name other than patents Subsurface Technology As holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 3 of 3 · Back to Subsurface Technology As
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,478,086 | Method for installing a sensor in connection with plugging a well Formerly held Term ended Term ended Oct 16, 2020 · From the USPTO record | Term ended | Term ended Oct 16, 2020 | From the USPTO record |
| US 6,513,589 | Hydraulic Switch Device Formerly held Term ended Term ended Oct 5, 2019 · High confidence | Term ended | Term ended Oct 5, 2019 | High confidence |
| US 6,296,053 | Controlled breaking of cables in a well casing Lapsed on the fee record Ended Oct 2, 2005 · From the USPTO record | Lapsed on the fee record | Ended Oct 2, 2005 | From the USPTO record |