Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12428910 | Gear reducer | — | 2025-09-30 |
| 12252940 | MWD isolation device | — | 2025-03-18 |
| 12098607 | Downhole vibration tool | Sheldon Ritchie, Mark K. Adam | 2024-09-24 |
| 11512587 | Integrated centerline data recorder | Stephen Jones, Junichi Sugiura | 2022-11-29 |
| 11118403 | Energized ring valve | Stephen Jones, Junichi Sugiura | 2021-09-14 |
| 10907410 | Compound angle bearing assembly | Sheldon Ritchie | 2021-02-02 |
| 10753152 | Rotor catch for bottomhole assembly | Sheldon Ritchie | 2020-08-25 |
| 10633919 | Compound angle bearing assembly | Sheldon Ritchie | 2020-04-28 |
| 10612316 | Articulated universal joint with backlash reduction | Sheldon Ritchie | 2020-04-07 |
| 10550689 | Method and apparatus for generating a low frequency pulse in a wellbore | Sheldon Ritchie, Malcolm Grant | 2020-02-04 |
| 10422184 | Downhole tool for vertical and directional control | Stephen Jones, Junichi Sugiura | 2019-09-24 |
| 10196858 | Downhole tool for vertical and directional control | Stephen Jones, Junichi Sugiura | 2019-02-05 |
| 10113362 | Offset shaft bearing assembly | Sheldon Ritchie | 2018-10-30 |