Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9518428 | Mechanism for providing controllable angular orientation while transmitting torsional load | Jonathan Ryan Prill | 2016-12-13 |
| 9347269 | Adjustable bend assembly for a downhole motor | Jonathan Ryan Prill | 2016-05-24 |
| 9206647 | Method and apparatus for controlling downhole rotational rate of a drilling tool | Jonathan Ryan Prill, Ralph William Graeme Johns | 2015-12-08 |
| 9163457 | Pressure compensation system for an oil-sealed mud motor bearing assembly | — | 2015-10-20 |
| 8844634 | Circulation sub with indexing mechanism | Jeffery Ronald Clausen | 2014-09-30 |
| 8827562 | Mud-lubricated bearing assembly with mechanical seal | Jonathan Ryan Prill | 2014-09-09 |
| 8511906 | Oil-sealed mud motor bearing assembly with mud-lubricated off-bottom thrust bearing | — | 2013-08-20 |
| 8500176 | Interlocking engagement mechanism for an adjustable bent housing | — | 2013-08-06 |
| 8474527 | Mechanism for providing controllable angular orientation while transmitting torsional load | Jonathan Ryan Prill | 2013-07-02 |