Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11566962 | Leak detection system and method | Tom Hunter | 2023-01-31 |
| 11519855 | Close-coupled analyser | Ruth Lindley, Ian Howieson, Stephen N. Waldron | 2022-12-06 |
| 10724945 | Laser detection system and method | Ruth Lindley | 2020-07-28 |
| 10180393 | Sample cell | Colin Lumsden | 2019-01-15 |
| 8453648 | Endotracheal tube with intrinsic suction and endotracheal suction control valve | Lelia Meadows Martin | 2013-06-04 |
| 4721162 | Fluid level controlled safety valve | Ronald E. Pringle | 1988-01-26 |
| 4538685 | Locking annulus safety valve | Ronald E. Pringle | 1985-09-03 |
| 4273194 | Annular flow control safety valve | Ronald E. Pringle | 1981-06-16 |