Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695918 | Cyanine dyes with chain sulfone substituent photographic materials comprising | Colin Gray, Derek D. Chapman, Kevin W. Williams | 1997-12-09 |
| 5679795 | Method of synthesizing dyes and precursor compounds therefor | — | 1997-10-21 |