Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9708854 | Device and method for drilling with continuous tool rotation and continuous drilling fluid supply | Mads Grinrod, Odd B. Skjaerseth | 2017-07-18 |
| 8931555 | Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings | Mads Grinrød | 2015-01-13 |
| 8844616 | Method for withdrawal and insertion of a drill pipe string in a borehole and also a device for use when practicing the method | Mads Grinrød | 2014-09-30 |
| 8794351 | Device and method for drilling with continuous tool rotation and continuous drilling fluid supply | Mads Grinrød, Odd B. Skjaerseth | 2014-08-05 |
| 8726984 | Rotary table device for a pipe string | Ove Kalvatn, Mads Grinrød, Odd B. Skjaerseth | 2014-05-20 |
| 8651200 | Tool guide device for a drill floor | Mads Grinrød, Odd B. Skjaerseth, Ove Kalvatn, Jarle Veshovde | 2014-02-18 |
| 8235123 | Separating device | Øyvind Stokka | 2012-08-07 |