Hart; Steven James
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hart; Steven James.The latest application filed is for "motor driven hybrid rotary steerable system".
- Hart; Steven James - Yate GB
- Hart; Steven James - Bath GB
| Patent | Date |
|---|---|
| Hybrid rotary steerable system Grant 7,188,685 - Downton , et al. March 13, 2 | 2007-03-13 |
| Design method for drillout bi-center bits Grant 6,606,923 - Hart , et al. August 19, 2 | 2003-08-19 |
| Motor Driven Hybrid Rotary Steerable System App 20030127252 - Downton , Geoff ; et al. | 2003-07-10 |
| Hybrid Rotary Steerable System App 20030121702 - Downton , Geoff ; et al. | 2003-07-03 |
| Design method for drillout bi-center bits App 20020069725 - Watson, Graham R. ; et al. | 2002-06-13 |
| Drillout bi-center bit Grant 6,394,200 - Watson , et al. May 28, 2 | 2002-05-28 |
| Multi-directional cutters for drillout bi-center drill bits App 20020020565 - Hart, Steven James ; et al. | 2002-02-21 |
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