Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6361918 | High speed radiographic film and imaging assembly | Robert E. Dickerson | 2002-03-26 |
| 5482825 | Silver halide emulsions containing fused dihydropyrimidines | Roger Lok, Xin Wen | 1996-01-09 |
| 5464735 | Supersensitizing bis-benzothiazolocyanine dye combination for red sensitive silver halide emulsions | John V. Holtzclaw | 1995-11-07 |
| 5413905 | Photographic sensitivity increasing alkynylamine compounds and photographic elements | Roger Lok, John W. Harder | 1995-05-09 |
| 5389510 | Photographic elements containing alkynylamine dopants | Wai K. Lam, Roger Lok | 1995-02-14 |