Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12345131 | Downhole rotary drive apparatus | Alan Phillips, Matias Garza | 2025-07-01 |
| 12173574 | Method and apparatus for well tubular flotation | David Stephenson | 2024-12-24 |
| 11828119 | Method and apparatus for well tubular flotation | David Stephenson | 2023-11-28 |
| 10934796 | Method for removing casing from a wellbore | David Stephenson, Neil Andrew Abercrombie Simpson | 2021-03-02 |
| 10907439 | Apparatus and method for well tubular flotation | David Stephenson | 2021-02-02 |
| 9080384 | Pressure balanced fluid operated reaming tool for use in placing wellbore tubulars | Edward D. Scott, Wojciech Buczak | 2015-07-14 |