Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9624750 | Systems and methods of diverting fluids in a wellbore using destructible plugs | Pavlin B. Entchev, William A. Sorem, Zhihua Wang, David A. Baker, Larry D. Mercer +1 more | 2017-04-18 |
| 8469120 | Methods and apparatus for controlling cutting ribbons during a drilling operation | Pavlin B. Entchev, John H. Jackson | 2013-06-25 |
| 7789162 | Method for running tubulars in wellbores | Stuart R. Keller, Paul Matthew Spiecker, Bruce A. Dale | 2010-09-07 |
| 7681644 | Managing lost returns in a wellbore | Stuart R. Keller, Nancy M. Krahel, Martin V. Smith, Robert S. Williamson, III | 2010-03-23 |