Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7193420 | Insulated sleeve with conductive electrodes to reduce borehole effects for an induction tool | Robert C. Smith, David T. Oliver, Gary A. Hazen, Dean Homan, Jan W. Smits | 2007-03-20 |
| 7091877 | Apparatus and methods for determining isotropic and anisotropic formation resistivity in the presence of invasion | Thomas D. Barber, Stephen D. Bonner, Dean Homan, Gerald N. Minerbo, Richard A. Rosthal | 2006-08-15 |
| 7038457 | Constructing co-located antennas by winding a wire through an opening in the support | Thomas D. Barber | 2006-05-02 |
| 7023212 | Insulated sleeve with conductive electrodes to reduce borehole effects for an induction tool | Robert C. Smith, David T. Oliver, Gary A. Hazen, Dean Homan, Jan W. Smits | 2006-04-04 |
| 6997258 | Apparatus and methods for pressure compensated contact with the borehole wall | Dean Homan | 2006-02-14 |
| 6933726 | Apparatus and methods for reducing borehole current effects | Robert C. Smith, Gary A. Hazen, Charles G. Kibbe, Richard A. Rosthal, Thomas D. Barber +2 more | 2005-08-23 |
| 6893054 | Quick connection for tubulars | — | 2005-05-17 |
| 6817598 | Gun brake device | Robert A. Parrott, Stephen F. Lloyd, Gerhard Schoonderbeek, Atilla Kaplan, Henrik Praesius | 2004-11-16 |
| 6667620 | Current-directing shield apparatus for use with transverse magnetic dipole antennas | Dean Homan, Charles G. Kibbe | 2003-12-23 |
| 6651747 | Downhole anchoring tools conveyed by non-rigid carriers | James S. Almaguer, Simon L. Farrant | 2003-11-25 |
| 6378625 | Perforating gun | — | 2002-04-30 |
| 6336408 | Cooling system for downhole tools | Robert A. Parrott, Haoshi Song | 2002-01-08 |
| 6315043 | Downhole anchoring tools conveyed by non-rigid carriers | Simon L. Farrant, Jerry D. Campbell, James S. Almaguer | 2001-11-13 |
| 6125946 | Perforating gun | — | 2000-10-03 |
| 6102120 | Zone isolation tools | Haoshi Song, Jack F. Lands, Jr., Wallace E. Voreck, Dinesh R. Patel | 2000-08-15 |