Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853319 | Photographic silver halide element and process | Sundaram Krishnamurthy, Brian H. Johnston, David C. Vogel, Paul R. Buckland | 1989-08-01 |
| 4849328 | Cyan dye-forming couplers and photographic materials containing same | David Hoke | 1989-07-18 |