Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5393654 | Photothermographic imaging materials and sensitisers therefor | David B. Oliff, James B. Philip, Jr. | 1995-02-28 |
| 5245045 | Near infrared antihalation dyes | Kevin P. Hall, Mark P. Kirk | 1993-09-14 |
| 5216166 | Infra-red sensitive photographic materials | Kevin P. Hall | 1993-06-01 |
| 5041550 | Infra-red sensitizing dyes for silver halide | Bernard A. Lea, Thomas D. G. Hellings, Charles G. Barlow, Ivan H. Skoog | 1991-08-20 |
| 4959294 | Infra-red sensitising dyes for silver halide | Bernard A. Lea, Thomas D. G. Hellings, Charles G. Barlow, Ivan H. Skoog | 1990-09-25 |
| 4950577 | Pre-press light-sensitive color proofing article incorporating antihalation layer | Duncan M. A. Grieve, John Souter | 1990-08-21 |
| 4857450 | Silver halide photographic materials | Keith A. Penfound, Bernard A. Lea | 1989-08-15 |
| 4581325 | Photographic elements incorporating antihalation and/or acutance dyes | Jonathan P. Kitchin, Bernard A. Lea | 1986-04-08 |
| 4283487 | Thermolabile acutance dyes for dry silver | Bernard A. Lea | 1981-08-11 |