Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5342066 | Non-extrusion device for split annular casing/tubing hanger compression seals | Ronald W. Henley, Michael R. Williams, Henry Wong | 1994-08-30 |
| 5183268 | Metal-to-metal wellhead seal for rough casing | Henry Wong, Lien-Yan Chen | 1993-02-02 |
| 5180008 | Wellhead seal for wide temperature and pressure ranges | Tod Aldridge, John A. Fitzgerald, Allan K. McGregor, Rudolf R. Schoen, Appavoo Thangarasu +1 more | 1993-01-19 |