Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5041550 | Infra-red sensitizing dyes for silver halide | Ronald W. Burrows, Thomas D. G. Hellings, Charles G. Barlow, Ivan H. Skoog | 1991-08-20 |
| 4959294 | Infra-red sensitising dyes for silver halide | Ronald W. Burrows, Thomas D. G. Hellings, Charles G. Barlow, Ivan H. Skoog | 1990-09-25 |
| 4857450 | Silver halide photographic materials | Ronald W. Burrows, Keith A. Penfound | 1989-08-15 |
| 4835096 | Sensitizers for photothermographic media | — | 1989-05-30 |
| 4594312 | Heat bleachable dye systems | Gebran J. Sabongi, Stephen S. Poon | 1986-06-10 |
| 4581325 | Photographic elements incorporating antihalation and/or acutance dyes | Jonathan P. Kitchin, Ronald W. Burrows | 1986-04-08 |
| 4283487 | Thermolabile acutance dyes for dry silver | Ronald W. Burrows | 1981-08-11 |