Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7975983 | System, method and apparatus for split gate valve with mechanically isolated seal surfaces | David Daniel Comeaux, Robert Kevin Law | 2011-07-12 |
| 7909105 | Independent wellhead drilling adapter | Eugene Borak, Vanson Huynh | 2011-03-22 |
| 7559366 | Flex-lock metal seal system for wellhead members | Rick C. Hunter, Charles E. Jennings, Steven Ellis | 2009-07-14 |
| 6929244 | Interference-fit seal for gate valves | Robert Kevin Law, David Daniel Comeaux | 2005-08-16 |
| 5370362 | Gate valve | Peter M. Kent, Hernani G. DeOcampo, Ted D. Williams | 1994-12-06 |
| 4911245 | Metal seal with soft inlays | Frank C. Adamek, Charles D. Bridges | 1990-03-27 |
| 4911480 | Torque nut for setting a graphite seal | Charles D. Bridges | 1990-03-27 |