Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9329297 | Dipole locator using multiple measurement points | Brian J. Schrock, David R. Brown | 2016-05-03 |
| 9146286 | Receiver system for guiding a downhole tool assembly | — | 2015-09-29 |
| 8981780 | Dipole locator using multiple measurement points | Michael F. Gard, David R. Brown, Bradley S. Marshall | 2015-03-17 |
| 8928323 | Dipole locator using multiple measurement points | Brian J. Schrock, David R. Brown | 2015-01-06 |
| 8829906 | Method for detection of signal source using estimation of noise statistics | Michael F. Gard | 2014-09-09 |
| 8497684 | Dipole locator using multiple measurement points | Michael F. Gard, David R. Brown, Bradley S. Marshall | 2013-07-30 |
| 8482286 | Method for guiding a downhole tool assembly using an above-ground receiver system | — | 2013-07-09 |
| 8191653 | System and method for tracking and maintaining an on-grade horizontal borehole | Floyd R. Gunsaulis, Brian K. Bailey, Kelvin P. Self, Gerald A. Stangl | 2012-06-05 |
| 7999551 | Method for detection of signal source using estimation of noise statistics | Michael F. Gard | 2011-08-16 |
| 7952357 | Receiver system for determining the location of a magnetic field source | — | 2011-05-31 |
| 7896107 | System for tracking and maintaining on on-grade horizontal borehole | Floyd R. Gunsaulis, Brian K. Bailey, Kelvin P. Self, Gerald A. Stangl | 2011-03-01 |
| 7786731 | Dipole locator using multiple measurement points | Michael F. Gard, David R. Brown, Bradley S. Marshall | 2010-08-31 |
| 7647987 | Multiple antenna system for horizontal directional drilling | — | 2010-01-19 |
| 7624816 | Configurable beacon and method | Michael Campbell, Floyd R. Gunsaulis | 2009-12-01 |
| 7510029 | System for tracking and maintaining an on-grade horizontal borehole | Floyd R. Gunsaulis, Brian K. Bailey, Kelvin P. Self, Gerald A. Stangl | 2009-03-31 |
| D579357 | Bi-pod tracker | David R. Brown | 2008-10-28 |
| 7350594 | System and method for tracking and communicating with a boring tool | Bradley S. Marshall, Michael Campbell | 2008-04-01 |
| 7331409 | Configurable beacon and method | Michael Campbell, Floyd R. Gunsaulis | 2008-02-19 |
| 7150331 | System and method for tracking and communicating with a boring tool | Bradley S. Marshall, Michael Campbell | 2006-12-19 |
| 6694599 | Method of connecting commutator bars in a cross-linked commutator having additional parallel paths | Peter A. Kershaw, Andrew Lakerdas, Andrew P. Smith, John Van Duynhoven, Nicholas J. Glowacki | 2004-02-24 |