Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6543538 | Method for treating multiple wellbore intervals | Kris J. Nygaard, Abdel Wadood M. El-Rabaa, William A. Sorem | 2003-04-08 |
| 6520255 | Method and apparatus for stimulation of multiple formation intervals | Lawrence O. Carlson, David A. Kinison, Kris J. Nygaard, Glenn S. Goss, William A. Sorem +1 more | 2003-02-18 |
| 6394184 | Method and apparatus for stimulation of multiple formation intervals | Lawrence O. Carlson, David A. Kinison, Kris J. Nygaard, Glenn S. Goss, William A. Sorem +1 more | 2002-05-28 |