Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7026813 | Semi-conductive shell for sources and sensors | Gerald N. Minerbo, Sofia Davydycheva | 2006-04-11 |
| 7023212 | Insulated sleeve with conductive electrodes to reduce borehole effects for an induction tool | Kuo-Chiang Chen, Robert C. Smith, David T. Oliver, Gary A. Hazen, Jan W. Smits | 2006-04-04 |
| 6997258 | Apparatus and methods for pressure compensated contact with the borehole wall | Kuo-Chiang Chen | 2006-02-14 |
| 6927578 | Detection of borehole currents due to a decentered transverse magnetic dipole transmitter | Dzevat Omeragic | 2005-08-09 |
| 6788065 | Slotted tubulars for subsurface monitoring in directed orientations | Dzevat Omeragic | 2004-09-07 |
| 6710601 | Borehole current correction for tilted or transverse magnetic dipoles on conductive supports | Richard A. Rosthal, Thomas D. Barber, Stephen D. Bonner, Brian Clark, Dzevat Omeragic | 2004-03-23 |
| 6690170 | Antenna structures for electromagnetic well logging tools | Gary A. Hazen, Richard A. Rosthal, David L. Smith, Thomas D. Barber, Paul Michael Ray +1 more | 2004-02-10 |
| 6680613 | Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole | Richard A. Rosthal, Thomas D. Barber, Stephen D. Bonner, Brian Clark, Dzevat Omeragic | 2004-01-20 |
| 6667620 | Current-directing shield apparatus for use with transverse magnetic dipole antennas | Charles G. Kibbe, Kuo-Chiang Chen | 2003-12-23 |
| 6624634 | Borehole current correction methods and apparatus | Richard A. Rosthal, Thomas D. Barber, Stephen D. Bonner, Brian Clark, Dzevat Omeragic | 2003-09-23 |
| 6573722 | Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole | Richard A. Rosthal, Thomas D. Barber, Stephen D. Bonner, Brian Clark, Dzevat Omeragic | 2003-06-03 |
| 6557794 | Coil shielding method for selective attenuation of an electromagnetic energy field component | Richard A. Rosthal, Dzevat Omeragic, Stephen D. Bonner, Brian Clark, Scott S. Chesser +1 more | 2003-05-06 |
| 6380744 | Shielding apparatus for selective attenuation of an electromagnetic energy field component | Brian Clark, Richard A. Rosthal, Dzevat Omeragic, Stephen D. Bonner, Scott S. Chesser +1 more | 2002-04-30 |
| 6351127 | Shielding method and apparatus for selective attenuation of an electromagnetic energy field component | Richard A. Rosthal, Dzevat Omeragic, Stephen D. Bonner, Brian Clark, Scott S. Chesser +1 more | 2002-02-26 |
| 6297639 | Method and apparatus for directional well logging with a shield having sloped slots | Brian Clark, Richard A. Rosthal, Dzevat Omeragic, Stephen D. Bonner, Scott S. Chesser +1 more | 2001-10-02 |