Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8955619 | Managed pressure drilling | Frederick T. Tilton, David M. Haugen, Kevin Smith, David J. Brunnert, Thomas F. Bailey +3 more | 2015-02-17 |
| 7178600 | Apparatus and methods for utilizing a downhole deployment valve | Mike A. Luke, Darrell B. Johnson, David J. Brunnert, Brian C. Grayson, David Pavel +1 more | 2007-02-20 |
| 5135723 | Flueless combustion system for trash and waste conversion | — | 1992-08-04 |
| 4505787 | Process for production of a carbide by-product with microwave energy and aluminum by electrolysis | Lewis R. Finell | 1985-03-19 |