Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8127850 | Method of treating subterranean formations using sequential proppant stages | Harold Dean Brannon, William Dale Wood, Allan R. Rickards, Christopher John Stephenson, Doug Walser +1 more | 2012-03-06 |
| 7918277 | Method of treating subterranean formations using mixed density proppants or sequential proppant stages | Harold Dean Brannon, William Dale Wood, Allan R. Rickards, Christopher John Stephenson, Doug Walser +1 more | 2011-04-05 |
| 7472751 | Method of treating subterranean formations using mixed density proppants or sequential proppant stages | Harold Dean Brannon, William Dale Wood, Allan R. Rickards, Christopher John Stephenson, Doug Walser +1 more | 2009-01-06 |
| 7210528 | Method of treatment subterranean formations using multiple proppant stages or mixed proppants | Harold Dean Brannon, William Dale Wood, Allan R. Rickards, Christopher John Stephenson, Doug Walser +1 more | 2007-05-01 |