Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9488025 | Rotating control device with positive drive gripping device | Sean Austin Alley | 2016-11-08 |
| 9279298 | Well control systems and methods | Derrick W. Lewis, Ronald Johannes Dirksen, David Michael Radley, James Randolph Lovorn | 2016-03-08 |
| 9260934 | Remote operation of a rotating control device bearing clamp | Craig W. Godfrey, Peter Antonenko, Neal G. Skinner, Derrick W. Lewis | 2016-02-16 |
| 9169700 | Pressure control device with remote orientation relative to a rig | Derrick W. Lewis, Leyb Ginzburg | 2015-10-27 |
| 8739863 | Remote operation of a rotating control device bearing clamp | Leonard C. Linde, Derrick W. Lewis, Joseph Michael Karigan, Mike Harvey, Neal G. Skinner +2 more | 2014-06-03 |
| 7597151 | Hydraulically operated formation isolation valve for underbalanced drilling applications | Ronald E. Hyden, Michael Harvey, Jimmie R. Williamson, Jr., James Dan Vick, Jr. | 2009-10-06 |
| 6962215 | Underbalanced well completion | Derrick W. Lewis, Dale Ray, Michael Harvey | 2005-11-08 |
| 6644110 | Measurements of properties and transmission of measurements in subterranean wells | Paul N. Spriggs, Vimal V. Shah | 2003-11-11 |