Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12372189 | Tubular with screw thread | Pieter Dirk Melis Van Duivendijk | 2025-07-29 |
| 11976764 | Tubular with screw thread | Pieter Dirk Melis Van Duivendijk | 2024-05-07 |
| 10927657 | Wellbore drilling with a top drive device | Pieter Dirk Melis Van Duivendijk, Diederick Bernardus Wijning, Jasper Hendrik Frank Bakker, Joop Roodenburg, Adriaan Van Swieten | 2021-02-23 |
| 10718162 | Servicing a top drive device of a wellbore drilling installation | Pieter Dirk Melis Van Duivendijk, Diederick Bernardus Wijning, Jasper Hendrik Frank Bakker, Adriaan Van Swieten, Joop Roodenburg | 2020-07-21 |
| 10329841 | Wellbore drilling with a trolley and a top drive device | Pieter Dirk Melis Van Duivendijk, Diederick Bernardus Wijning, Jasper Hendrik Frank Bakker, Adriaan Van Swieten, Joop Roodenburg | 2019-06-25 |