Inventor
Roger Sverre Stave
Inventor
Bergen, NO
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling78%
Y10TTechnical subjects covered by former us classification11%
B08BCleaning in general6%
F04DNon-positive-displacement pumps6%
PatentTitleYear
10,480,256Riser system for coupling selectable modules to the riser20199,670,744'Drilling fluid circulation system'20179,664,006'Riser isolation device having automatically operated annular seal'20179,428,975'Drilling fluid pump module coupled to specially configured riser segment and method for coupling the pump module to the riser'20169,322,232'System and method for inhibiting an explosive atmosphere in open riser subsea mud return drilling systems'20169,068,420'Device and method for controlling return flow from a bore hole'20159,057,233'Boost system and method for dual gradient drilling'20158,783,379'Fluid transfer device usable in managed pressure and dual-gradient drilling'20147,958,948'Method and system for return of drilling fluid'20117,913,764'Return line mounted pump for riserless mud return system'20117,677,329'Method and device for controlling drilling fluid pressure'20107,431,081'Device for removal and filtration of drilling fluid'20087,044,226'Method and a device for removing a hydrate plug'20066,857,472'Well pump device'2005Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2005Patents assigned to ADR SUBSEA AS (1)· patent assignee history
2005–2010Based in Knarrevik, NO· patent location history
2006–2015Patents assigned to AGR SUBSEA AS (5)· patent assignee history
2008–2011Based in Knarvik, NO· patent location history
2011–2017Based in Bergen, NO· patent location history
2014–2017Patents assigned to STAVE ROGER SVERRE (3)· patent assignee history
2016–2017Patents assigned to ENHANCED DRILLING A S (2)· patent assignee history
2016Patents assigned to AGR SUBSEA A S (1)· patent assignee history
2016–2019Based in Straume, NO· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AGR SUBSEA AS | 5 | 2006–2015 |
| STAVE ROGER SVERREself | 3 | 2014–2017 |
| ENHANCED DRILLING A S | 2 | 2016–2017 |
| ADR SUBSEA AS | 1 | 2005 |
| AGR SUBSEA A S | 1 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bergen, NO | 5 | 2011–2017 |
| Straume, NO | 4 | 2016–2019 |
| Knarrevik, NO | 3 | 2005–2010 |
| Knarvik, NO | 2 | 2008–2011 |