Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8997851 | Grinding arrangement for tool joints on a drill string | Tom Kjetil Askeland | 2015-04-07 |
| 8985229 | Sealing arrangement, and corresponding method | Tom Kjetil Askeland | 2015-03-24 |
| 8403034 | Device and method for maintaining constant pressure on, and flow drill fluid, in a drill string | Tom Kjetil Askeland | 2013-03-26 |
| 8066062 | Seal for a drill string | Tom Kjetil Askeland | 2011-11-29 |
| 6877565 | Arrangement for the removal of cuttings and gas arising from drilling operations | — | 2005-04-12 |
| 6745851 | Methods and system for processing of drilling fluid | — | 2004-06-08 |