Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364733 | Photothermographic elements with novel layer structures, each of which contains a thermally-diffusible oxidizable leuco dye and process for producing a color image from leuco dye | Raymond J. Kenney, Takuzo Ishida | 1994-11-15 |
| 5278024 | Positive imaging diffusion-transfer dry silver system using formazan dye | David C. Weigel, Kumars Sakizadeh | 1994-01-11 |