| 12018542 |
Seal elements for annular control devices |
— |
2024-06-25 |
| 11975803 |
Hoist apparatus for mobile offshore platform |
Hans H. J. Deul |
2024-05-07 |
| 11566480 |
Method for detecting fluid influx or fluid loss in a well and detecting changes in fluid pump efficiency |
Young-Wan Hong |
2023-01-31 |
| 10689933 |
Pressure assisted motor operated ram actuator for well pressure control device |
Hans H. J. Deul, Patrick D. O'Neill, Matthew Sibrel, Ivan Iankov |
2020-06-23 |
| 10364609 |
Method for excavating mud line cellar for subsea well drilling |
Hans H. J. Deul, Patrick D. O'Neill, Matthew Sibrel |
2019-07-30 |
| 9056751 |
Hoisting device |
Joop Roodenburg, Pieter Dirk Melis Van Duivendijk |
2015-06-16 |
| 8459477 |
Hoisting crane and vessel with such a crane |
Joop Roodenburg, Diederick Bernardus Wijning, Terence Willem August Vehmeijer |
2013-06-11 |
| 6988459 |
Multipurpose tower for monohull with moveable hatch |
Joop Roodenburg, Diederick Bernardus Wijning |
2006-01-24 |
| 6932553 |
Multipurpose unit for drilling and well intervention |
Joop Roodenburg, Christopher Louis Beato |
2005-08-23 |
| 6926260 |
Compensation and hoisting apparatus |
Anne Klaas De Groot, Joop Roodenburg |
2005-08-09 |
| 6901998 |
Method for using a multipurpose system |
Joop Roodenburg, Christopher Louis Beato |
2005-06-07 |
| 6871609 |
Multipurpose tower for monohull |
Joop Roodenburg, Diederick Bernardus Wijning |
2005-03-29 |
| 6729804 |
Cantilevered tower for jack-up platform |
Joop Roodenburg, Pieter Dirk Melis Van Duivendijk |
2004-05-04 |