Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5998121 | Photographic element with silver halide emulsion layer of low developability and having an associated high dye-yield coupler | David T. Southby, James T. Kofron | 1999-12-07 |
| 5411854 | Sensitivity increase from alkynylamineazole, sensitizing dye, and chalcogenazolium salt added before heat cycle | Thomas B. Brust | 1995-05-02 |
| 4916052 | Hollow silver halide grains and process for the preparation thereof | Mark E. Irving | 1990-04-10 |
| 4865964 | Blended emulsions exhibiting improved speed-granularity relationship | — | 1989-09-12 |