Inventor · disambiguated record
Rolf Dirdal
Also filed as: DIRDAL ROLF
1 granted patent·1 pending application·11 citations·filing 2000–2007
33Inventor score
Technology areasE21B
Top patents by PatentIndex Score
2 records- 0139US6631763B1Method and system for testing a borehole by the use of a movable plugNORSKE STATS OLJESELSKAP·Filed 2000·Granted Oct 14, 2003·11 cites·13 claims
- 0220US2010006282A1Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressureDIRDAL ROLF·Filed 2007·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →