Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6103912 | Photographic products and processes | Charles E. Jandrue, Sr., Marcis M. Kampe, David P. Waller, David C. Whritenour | 2000-08-15 |
| 5399709 | N-substituted triarylmethane sulfonamides and method of preparation | Marcis M. Kampe, David P. Waller | 1995-03-21 |
| 5332654 | Reversible redox-controlled imaging method | Marcis M. Kampe, David P. Waller | 1994-07-26 |
| 5258279 | Reversible redox-controlled imaging methods | Marcis M. Kampe, David P. Waller | 1993-11-02 |
| 5244771 | Photographic products and processes | Charles E. Jandrue, Sr., Marcis M. Kampe, David P. Waller, David C. Whritenour | 1993-09-14 |
| 4886733 | Photographic products and processes | — | 1989-12-12 |
| 4794067 | Copolymeric mordants and photographic products and processes containing same | J. Michael Grasshoff | 1988-12-27 |
| 4656286 | Aminoethanethiol and thiazolidine compounds | Paul T. MacGregor | 1987-04-07 |
| 4636568 | Aminoether compounds | David P. Waller | 1987-01-13 |
| 4631344 | Photographic products and processes | David P. Waller | 1986-12-23 |
| 4535051 | Photographic products and processes with color shifted dye | David P. Waller | 1985-08-13 |
| 4336387 | Thiazolidine-substituted phenyl sulfonyl chlorides | — | 1982-06-22 |