Antech Limited
Records under this name other than the patents Antech Limited 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 4 patents it holds.
Showing 1 to 6 of 6 · Back to Antech Limited
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,762,601 | Non-invasive detectors for wells Term ended Term ended Jan 7, 2023 · From the USPTO record | Term ended | Term ended Jan 7, 2023 | From the USPTO record |
| US 6,763,900 | Directional well drilling Term ended Term ended Jun 15, 2022 · From the USPTO record | Term ended | Term ended Jun 15, 2022 | From the USPTO record |
| US 6,698,534 | Direction control in well drilling Term ended Term ended May 17, 2022 · From the USPTO record | Term ended | Term ended May 17, 2022 | From the USPTO record |
| US 6,523,609 | Borehole pressure gauge Term ended Term ended Sep 6, 2020 · From the USPTO record | Term ended | Term ended Sep 6, 2020 | From the USPTO record |
| US 6,354,379 | Oil well separation method and apparatus Term ended Term ended Feb 8, 2019 · From the USPTO record | Term ended | Term ended Feb 8, 2019 | From the USPTO record |
| US 4,859,429 | Ozone generating device Term ended Term ended no later than Aug 22, 2009 · Low confidence | Term ended | Term ended no later than Aug 22, 2009 | Low confidence |