Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10435610 | Drilling fluid for downhole electrocrushing drilling | Dale E. Jamison, William Walter Shumway | 2019-10-08 |
| 10316237 | Drilling fluid for downhole electrocrushing drilling | William Walter Shumway | 2019-06-11 |
| 10208540 | Non-toxic, inexpensive, low viscosity mineral oil based drilling fluid | Christopher E. Johnson | 2019-02-19 |