Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE44214 | Unmanned integrated optical remote emissions sensor (RES) for motor vehicles | David R. Nelson, Troy P. Bahan, George Charles Polchin, Michael D. Jack | 2013-05-14 |
| RE40767 | Unmanned integrated optical remote emissions sensor (RES) for motor vehicles | David R. Nelson, Troy P. Bahan, George Charles Polchin, Michael D. Jack | 2009-06-23 |
| 5831267 | Method and apparatus for remote measurement of exhaust gas | Michael D. Jack, David R. Nelson, Michael N. Gray | 1998-11-03 |
| 5726450 | Unmanned integrated optical remote emissions sensor (RES) for motor vehicles | David R. Nelson, Troy P. Bahan, George Charles Polchin, Michael D. Jack | 1998-03-10 |
| 5719396 | Systems and methods for determining compliance of moving vehicles with emission-concentration standards | Michael D. Jack, Troy P. Bahan, Jeffrey L. Hanson, David R. Nelson, Allen J. Paneral | 1998-02-17 |