Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5342066 | Non-extrusion device for split annular casing/tubing hanger compression seals | Ronald D. Quates, Michael R. Williams, Henry Wong | 1994-08-30 |
| 5031695 | Well casing hanger with wide temperature range seal | David Cain, Kevin P. Long, Tep Ungchusri, John C. Vicic | 1991-07-16 |