Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7059407 | Method and apparatus for stimulation of multiple formation intervals | Randy C. Tolman, Lawrence O. Carlson, Kris J. Nygaard, Glenn S. Goss, William A. Sorem +1 more | 2006-06-13 |
| 6957701 | Method and apparatus for stimulation of multiple formation intervals | Randy C. Tolman, Lawrence O. Carlson, Kris J. Nygaard, Glenn S. Goss, William A. Sorem +1 more | 2005-10-25 |
| 6672405 | Perforating gun assembly for use in multi-stage stimulation operations | Randy C. Tolman, Kris J. Nygaard, William A. Sorem, Timothy J. Hall, Jeffrey R. Bailey | 2004-01-06 |
| 6520255 | Method and apparatus for stimulation of multiple formation intervals | Randy C. Tolman, Lawrence O. Carlson, Kris J. Nygaard, Glenn S. Goss, William A. Sorem +1 more | 2003-02-18 |
| 6394184 | Method and apparatus for stimulation of multiple formation intervals | Randy C. Tolman, Lawrence O. Carlson, Kris J. Nygaard, Glenn S. Goss, William A. Sorem +1 more | 2002-05-28 |