Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8184270 | System for viewing an object in a visually obscured environment and method of use | Richard I. Billmers, Mary E. Ludwig | 2012-05-22 |
| 7839550 | Volume holographic filter with broad acceptance angle and narrow spectral bandwidth | Richard I. Billmers, Mary E. Ludwig, Joseph David Matchett | 2010-11-23 |
| 7561255 | System for viewing objects at a fire scene and method of use | Richard I. Billmers, Vincent M. Contarino, Rudolph Lucente, Mary E. Ludwig | 2009-07-14 |
| 7480048 | Monochromator employing single grating volume holograms and method of use | Richard I. Billmers, Mary E. Ludwig, Joseph David Matchett | 2009-01-20 |
| 7355768 | Wavelength tunable holographic filter with broad acceptance angle and narrow spectral bandwidth | Richard I. Billmers, Mary E. Ludwig | 2008-04-08 |
| 6724467 | System for viewing objects at a fire scene and method of use | Richard I. Billmers, Vincent M. Contarino, Rudolph Lucente, Mary E. Ludwig | 2004-04-20 |