Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4383956 | Method of a single element complete air filtering structure for a respirator filter cartridge | George T. Croft | 1983-05-17 |
| 4367170 | Stabilized photochromic materials | Donald R. Uhlmann, Elias Snitzer, Nori Y. C. Chu | 1983-01-04 |
| 4342668 | Photochromic compounds | Nori Y. C. Chu, Peter G. Piusz, Charles H. Fuchsman | 1982-08-03 |
| 4289497 | Gradient photochromic lens and method selectively reducing photochromic activity | — | 1981-09-15 |
| 4215010 | Photochromic compounds | Nori Y. C. Chu, Peter G. Piusz, Charles H. Fuchsman | 1980-07-29 |