Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5208688 | Eye protection device for welding helmets | John D. Fergason, Jeffrey K. Fergason, James L. Fergason | 1993-05-04 |
| 5050966 | Optical combiner collimating apparatus | — | 1991-09-24 |
| 5016985 | Infrared filter using cholesteric liquids | Michael H. Kalmanash | 1991-05-21 |
| 4987410 | Multiple image forming apparatus | Thomas M. Lewis | 1991-01-22 |
| 4900133 | Heads-up display combiner utilizing a cholesteric liquid crystal element | — | 1990-02-13 |
| 4884876 | Achromatic liquid crystal shutter for stereoscopic and other applications | Lenny Lipton, Lawrence D. Meyer | 1989-12-05 |
| 4879603 | Multiple image, single display system and method | — | 1989-11-07 |
| 4859031 | Optical collimating apparatus | James E. Melzer | 1989-08-22 |
| 4792850 | Method and system employing a push-pull liquid crystal modulator | Lenny Liptoh, Lawrence D. Meyer, James L. Fergason | 1988-12-20 |
| 4235526 | Liquid crystal display cell having a light field background | Gordon Kramer | 1980-11-25 |
| 4235525 | Liquid crystal display cell having a light field background | Gordon Kramer | 1980-11-25 |