Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8403042 | Method and apparatus for use with downhole tools having gas-filled cavities | Mike Frels | 2013-03-26 |
| 7152697 | Delayed phase changing agent for invert emulsion drilling fluid | Robert L. Horton, Bethicia B. Prasek, Frank E. Evans, Mark Luyster, Steve Mason | 2006-12-26 |
| 6499546 | Buffered well fluids | Michael A. Freeman | 2002-12-31 |