Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10294776 | Horizontal directional drilling system including sonde position detection using global positioning systems | Scott Rempe, Tony Briggs, David Hanson, Nathan Copeland, Hans Kelpe +2 more | 2019-05-21 |
| 9646415 | System and method for visualizing multiple-sensor subsurface imaging data | David Hanson, Ross Peter Jones, Peter John Kelly | 2017-05-09 |
| 9611732 | Horizontal directional drilling system including sonde position detection using global positioning systems | Scott Rempe, Tony Briggs, David Hanson, Nathan Copeland, Hans Kelpe +2 more | 2017-04-04 |
| 7612704 | Positioning correction system and method for single and multi-channel ground penetrating radar | Kenneth J. Ryerson, David Hanson | 2009-11-03 |
| 6028270 | Noninvasive mass determination stockpiled materials | Dwain K. Butler | 2000-02-22 |