Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10287839 | Wellhead tiedown system | Stephan Bjoern Linhart, Paul Vasile Marcean, Constantin Zanfir | 2019-05-14 |
| 9771775 | Valve for a hydrocarbon well, hydrocarbon well provided with such valve and use of such valve | Derk Lucas Klompsma | 2017-09-26 |
| 9638001 | Method for producing hydrocarbon gas from a wellbore and valve assembly | Cornelis Adrianus Maria Veeken, Derk Lucas Klompsma, Ewout Biezen | 2017-05-02 |
| 9435174 | System and method for injecting a treatment fluid into a wellbore and a treatment fluid injection valve | Derk Lucas Klompsma | 2016-09-06 |
| 7198099 | Method and system for injecting a treatment fluid into a well | Gerbrand Jozef Maria Van Eijden | 2007-04-03 |
| 4889184 | Polished rod stuffing box with safety valve for a beam pumped production well | Albert Klamer | 1989-12-26 |