Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9458703 | Compressible carbonaceous particulate material and method of making same | Richard D. Nelson | 2016-10-04 |
| 9206681 | Wellbore fluid testing assembly | James L. Bruley, Jess Garcia | 2015-12-08 |
| 8999898 | Drilling fluid additive for loss circulation and wellbore strengthening | David J. Derwin, Frank A. Wawrzos | 2015-04-07 |
| 8617309 | Cement compositions including resilient graphitic carbon fraction | Peter R. Carney, Craig Allen Baer, David J. Derwin, Frank A. Wawrzos, Marcin Tlustochowicz | 2013-12-31 |