Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7274994 | Exhaust opacity measuring device | Donald H. Stedman, Gary Full | 2007-09-25 |
| 7164132 | Multilane remote sensing device | John DiDomenico, James H. Johnson, Donald H. Stedman, W. John Williams | 2007-01-16 |
| 7016789 | Exhaust opacity measuring device | Donald H. Stedman, Gary Full | 2006-03-21 |
| 6701256 | Exhaust opacity measuring device | Donald H. Stedman, Gary Full | 2004-03-02 |
| 6671630 | System and method for remote analysis of small engine vehicle emissions | Donald H. Stedman | 2003-12-30 |
| 6560545 | System and method for remote analysis of small engine vehicle emissions | Donald H. Stedman | 2003-05-06 |
| 5498872 | Apparatus for remote analysis of vehicle emissions | Donald H. Stedman, Scott E. McLaren | 1996-03-12 |
| 5489777 | Apparatus for remote analysis of vehicle emissions using reflective thermography | Donald H. Stedman | 1996-02-06 |
| 5401967 | Apparatus for remote analysis of vehicle emissions | Donald H. Stedman, Scott E. McLaren | 1995-03-28 |
| 5319199 | Apparatus for remote analysis of vehicle emissions | Donald H. Stedman | 1994-06-07 |
| 5210702 | Apparatus for remote analysis of vehicle emissions | Donald H. Stedman | 1993-05-11 |