Issued Patents All Time
Showing 51–56 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4452511 | Substituted anthracene-type isotropic dyes for liquid crystal display devices | — | 1984-06-05 |
| 4448492 | Cycloalkyl-type isotropic dyes for liquid crystal display devices | — | 1984-05-15 |
| 4394070 | Helichromic compounds and displays | Harvey A. Brown | 1983-07-19 |
| 4232949 | Liquid crystal compositions containing pleochroic dye | — | 1980-11-11 |
| 4222902 | Semiconductive and sensitized photoconductive compositions | Stephen P. Birkeland, Kevin P. O'Leary | 1980-09-16 |
| 4194911 | Inhibitor removing bath for direct positive color photographic development | R. Dean Lowrey, Geoffrey Nicholson, Bruce W. Wittnebel | 1980-03-25 |