Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6902005 | Tubing annulus communication for vertical flow subsea well | Amin Radi, Fife B. Ellis, Robert K. Voss | 2005-06-07 |
| 5950737 | Drilling riser centralizer | Yung-sen Chou, Jeffrey Douglas Otten, Sammy Russell Moore | 1999-09-14 |