Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11828111 | Apparatus and method relating to managed pressure drilling | David Symonds, Richard P. Johnston, Garry Stephen | 2023-11-28 |
| 11708727 | Connection system for a marine drilling riser | Garry Stephen, Richard P. Johnston, David Symonds | 2023-07-25 |
| 11260147 | Chemical gradients | Mario Romero-Ortega, Parisa Lotfi, Benjamin R. JOHNSTON, Swarupnarayan Dash, Joselito Razal | 2022-03-01 |
| 10646617 | Chemical gradients | Mario Romero-Ortega, Parisa Lotfi, Benjamin R. JOHNSTON, Swarupnarayan Dash, Joselito Razal | 2020-05-12 |
| 9931432 | Chemical gradients | Mario Romero-Ortega, Parisa Lotfi, Benjamin R. JOHNSTON, Swarupnarayan Dash, Joselito Razal | 2018-04-03 |