Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7338756 | Method of preparation of direct dispersions of photographically useful chemicals | Paul L. Zengerle, Jerrold N. Poslusny, Stephen P. Singer, Peter P. Garrisi, Paul B. Merkel | 2008-03-04 |
| 6680165 | Cyan coupler dispersion with increased activity | Jerrold N. Poslusny, Paul B. Merkel, David A. Steele, Drake M. Michno, David S. Ross +1 more | 2004-01-20 |
| 5342746 | Method for the formation of color photographic materials with high coupling reactivity and reduced color developer PH sensitivity | Paul L. Zengerle, Chris J. Johnson | 1994-08-30 |