Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5719019 | Room-light handleable direct reversal silver halide emulsions containing nitro-substituted imidazole rereversal suppressants | Roger Lok | 1998-02-17 |
| 5240828 | Direct reversal emulsions | Francis R. Hilton, Jr., Richard D. Lucitte, Woodrow G. McDugle, Roger Lok, David Erdtmann | 1993-08-31 |
| 4835093 | Internally doped silver halide emulsions | Ralph W. Jones, James R. Buntaine, Myra T. Olm, Raymond S. Eachus | 1989-05-30 |