Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5622818 | Color photographic elements containing yellow colored magenta dye forming masking couplers | Daniel L. Kapp, Robert J. Ross, James P. Merrill | 1997-04-22 |
| 5591569 | Photographic element containing an azopyrazolone masking coupler exhibiting improved keeping | Daniel L. Kapp | 1997-01-07 |