Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9790416 | Drilling fluid compositions and methods for use thereof in subterranean formations | Charles R. Landis, Ryan Patrick Collins, David M. Donald | 2017-10-17 |
| 8851746 | Geothermal heating and/or cooling system grout testing | Ryan Patrick Collins, Shantel J. Stone | 2014-10-07 |