Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10196873 | Advanced blow-out preventer | Gerard M. Ludtka, Mariana Dionisio | 2019-02-05 |
| 5975484 | Door connectors | James D. Brugman | 1999-11-02 |
| 5897094 | BOP with improved door connectors | James D. Brugman | 1999-04-27 |
| 5735502 | BOP with partially equalized ram shafts | Mike Nicholson | 1998-04-07 |