Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11377172 | Semi-submersible drilling vessel, e.g. for use in a harsh environment | Joop Roodenburg | 2022-07-05 |
| 11346166 | Semi-submersible drilling vessel with a mud treatment and circulation system | Joop Roodenburg | 2022-05-31 |