Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372922 | Method of preparing photographic elements incorporating polymeric ultraviolet absorbers | Tienteh Chen | 1994-12-13 |
| 5360710 | Color photographic materials containing polymeric couplers | Tien-Teh Chen, Stanley W. Cowan, Ping-Wah Tang | 1994-11-01 |
| 5298368 | Photographic coupler compositions and methods for reducing continued coupling | Paul B. Merkel, Stephen P. Singer | 1994-03-29 |