Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6710600 | Drillpipe structures to accommodate downhole testing | Denis S. Kopecki, Hendrik John | 2004-03-23 |
| 6646441 | Well logging system for determining resistivity using multiple transmitter-receiver groups operating at three frequencies | Larry W. Thompson, Jian-Qun Wu | 2003-11-11 |
| 6577129 | Well logging system for determining directional resistivity using multiple transmitter-receiver groups focused with magnetic reluctance material | Larry W. Thompson, Jian-Qun Wu | 2003-06-10 |
| 5869968 | Method and apparatus for avoiding mutual coupling between receivers in measurement while drilling | Andrew Brooks, Larry W. Thompson, Jian-Qun Wu, Wallace H. Meyer, John W. Harrell | 1999-02-09 |