Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489090 | Stabilized ascorbic acid developing compositions and methods of use | Janet M. Huston, Jacques Roussilhe, Hugh G. McGuckin | 2002-12-03 |
| 6444414 | Ascorbic acid developing compositions stabilized with sulfo compound and methods of use | Janet M. Huston, John S. Badger, Jacques Roussilhe | 2002-09-03 |
| 6416940 | Calcium ion stable photographic color developing composition and method of use | Janet M. Huston, Charles M. Darmon, Charles S. Christ, Jr., Paul A. Schwartz, William G. Henry | 2002-07-09 |
| 6403290 | Calcium ion stable photographic color developing composition and method of use | Janet M. Huston, Charles M. Darmon, Charles S. Christ, Jr., Paul A. Schwartz, William G. Henry | 2002-06-11 |