Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7839719 | Fluid erosion protection washer for rotating shaft in MWD tool | Anthony R. Dopf, Trang Le, Derek W. Logan, Timothy Neff, Dave Switzer | 2010-11-23 |
| 7532540 | Fluid erosion protection washer for rotating shaft in MWD tool | Anthony R. Dopf, Trang Le, Derek W. Logan, Timothy Neff, Dave Switzer | 2009-05-12 |
| 7462957 | Multi-conductor plug and socket apparatus | Paul L. Camwell, Derek W. Logan, Jili Liu | 2008-12-09 |
| 6956791 | Apparatus for receiving downhole acoustic signals | Anthony R. Dopf, Paul L. Camwell, Derek W. Logan | 2005-10-18 |
| 6816053 | Circuit to mitigate transformer shorted turn | Paul L. Camwell | 2004-11-09 |