Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 8672057 | Method for controlling loss of drilling fluid | Martin V. Smith, Sabine C. Zeilinger, Chinar R. Aphale | 2014-03-18 | $108,866,000 |
| 8393411 | Method for controlling loss of drilling fluid | Martin V. Smith, Sabine C. Zeilinger, Chinar R. Aphale | 2013-03-12 | $119,878,000 |
| 7896105 | Method of drilling and production hydrocarbons from subsurface formations | — | 2011-03-01 | $249,651,000 |
| 7857047 | Method of drilling and producing hydrocarbons from subsurface formations | Stephen M. Remmert, Joseph W. Witt | 2010-12-28 | $80,003,000 |