Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691458 | Benzoisothiazole azo dyes | Michael J. Arnost, Peter Viski, David C. Whritenour | 1997-11-25 |
| 5674986 | Photographically useful compounds including at least one 1,3-sulfur-oxygen ring system | Peter Viski | 1997-10-07 |
| 5667943 | Process for thermochemical generation of acid and for thermal imaging, and imaging medium for use therein | Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Anthony J. Puttick, Stephen J. Telfer +1 more | 1997-09-16 |
| 5658705 | Image-recording materials with 1,3-sulfur-nitrogen dye releasers | Peter Viski | 1997-08-19 |