Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6194477 | Method of making honeycomb panel structures | John Cawse, Ayub S. Khan, Graham Kemp | 2001-02-27 |
| 5376510 | Concentrated photographic developing solution | Michael Parker, Anthony M. Lannon, William E. Long | 1994-12-27 |
| 4948714 | Processing of photographic silver halide materials | William E. Long, Kenneth M. McCombe, Marion R. Palmer | 1990-08-14 |
| 4753869 | Photographic developing agents containing stable, soluble, pyrazolidinones | William E. Long, Malcolm D. Tirel, Monica H. Gent | 1988-06-28 |
| 4560646 | Protected developing agents | William E. Long, Norman Alfred Smith, Stephen Postle, Kenneth M. McCombe, Martin C. Grossel | 1985-12-24 |
| 4490461 | Process for the preparation of photographic materials | Peter A. Lovell, Samuel B. Kingston | 1984-12-25 |
| 4362878 | Substituted 1,2,4-triazoles as DIR compounds and their use in photographic materials | — | 1982-12-07 |
| 4353974 | Process for the production of photographic images and photographic materials used in this process | Patrick D. P. Thomas, William E. Long | 1982-10-12 |
| 4259437 | Development inhibitor releasing compounds and their use in photographic materials | — | 1981-03-31 |
| 4233399 | Photographic elements containing amino-substituted hydroxy-pyridones | Rainer Kitzing, John G. V. Scott, Graham Evans | 1980-11-11 |
| 4226934 | Light sensitive photographic material containing development inhibitor releasing compounds | David L. R. Reeves | 1980-10-07 |
| 4182886 | Amino-substituted hydroxy-pyridones | Rainer Kitzing, John G. V. Scott, Graham Evans | 1980-01-08 |