Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4386149 | Process for the production of photographic images by dye diffusion transfer and photographic material suitable in this process | Leslie F. A. Mason, Brian R. D. Whitear, William E. Long, Glenn Wood, David L. R. Reeves | 1983-05-31 |
| 4287348 | Preparation of sulphoalkyl quaternary salts | Geoffrey E. Ficken, Victor W. Dolden | 1981-09-01 |
| 4285859 | Azo compounds useful in a photographic dye diffusion transfer process | Brian R. D. Whitear, William E. Long, David L. R. Reeves, Glenn Wood | 1981-08-25 |
| 4269928 | Process for the production of photographic images by dye diffusion transfer and photographic material suitable in this process | Leslie F. A. Mason, Brian R. D. Whitear, William E. Long, Glenn Wood, David L. R. Reeves | 1981-05-26 |
| 4233399 | Photographic elements containing amino-substituted hydroxy-pyridones | John G. V. Scott, Terence C. Webb, Graham Evans | 1980-11-11 |
| 4216146 | Azo(hydrazo)-anthraquinone compounds | Brian R. D. Whitear, William E. Long, David L. R. Reeves, Glenn Wood | 1980-08-05 |
| 4182886 | Amino-substituted hydroxy-pyridones | John G. V. Scott, Terence C. Webb, Graham Evans | 1980-01-08 |