Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6367804 | Variable bore ram packer for tapered tubular members in a ram type blowout preventer | — | 2002-04-09 |
| 6296225 | Ram bore profile for variable bore packer ram in a ram type blowout preventer | — | 2001-10-02 |
| 5944110 | Variable bore ram packer for a ram type blowout preventer | Theodore F. Griffin | 1999-08-31 |
| 4730851 | Downhole expandable casting hanger | — | 1988-03-15 |