Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658490 | Liquid crystal achromatic compound retarder | Kristina M. Johnson | 1997-08-19 |
| 5627666 | Liquid crystal phase modulator using cholesteric circular polarizers | Jay Stockley, Kristina M. Johnson | 1997-05-06 |
| 5619355 | Liquid crystal handedness switch and color filter | Kristina M. Johnson | 1997-04-08 |