Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5017469 | Twinned emulsions made from silver iodide seed crystals having an aspect ratio of at least 2:1 | James F. Bullock, Trevor J. Maternaghan | 1991-05-21 |
| 5009991 | Silver halide emulsions containing twinned silver halide crystals | James F. Bullock, Trevor J. Maternaghan, Karen N. Harvey | 1991-04-23 |
| 4996141 | Monomethine compounds | Geoffrey E. Ficken, Douglas J. Edwards, Trevor J. Maternaghan, Rolf Steiger, Victor W. Dolden | 1991-02-26 |