Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691458 | Benzoisothiazole azo dyes | Michael J. Arnost, David P. Waller, David C. Whritenour | 1997-11-25 |
| 5674986 | Photographically useful compounds including at least one 1,3-sulfur-oxygen ring system | David P. Waller | 1997-10-07 |
| 5667933 | Image-recording element | Gary E. Cargill, Edward C. Taylor, Christopher E. R. Orvig | 1997-09-16 |
| 5658705 | Image-recording materials with 1,3-sulfur-nitrogen dye releasers | David P. Waller | 1997-08-19 |