Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7921907 | In situ method and system for extraction of oil from shale | Alan K. Burnham, Roger L. Day, P. Henrick Wallman, James R. McConaghy, Paul Lerwick +1 more | 2011-04-12 |
| 7743826 | In situ method and system for extraction of oil from shale | Paul Lerwick, R. Glenn Vawter | 2010-06-29 |