Issued Patents 1994
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5360713 | Yellow dye-forming couplers and color photographic elements containing these couplers | Philip T. S. Lau, Stanley W. Cowan | 1994-11-01 |
| 5360710 | Color photographic materials containing polymeric couplers | Tien-Teh Chen, Stanley W. Cowan, Edward Schofield | 1994-11-01 |
| 5358835 | Photographic elements containing new yellow-dye-forming tris couplers | Philip T. S. Lau, Stanley W. Cowan | 1994-10-25 |
| 5358836 | Photographic elements containing new magenta-dye-forming tris couplers | Philip T. S. Lau, Stanley W. Cowan | 1994-10-25 |
| 5358829 | Photographic material and process comprising a bicyclic pyrazolo coupler | Stanley W. Cowan | 1994-10-25 |
| 5358837 | Photographic elements containing new magenta-dye-forming bis couplers | Terrence C. Mungal, Philip T. S. Lau, Stanley W. Cowan | 1994-10-25 |
| 5358838 | Photographic elements containing new yellow-dye-forming tris couplers | Philip T. S. Lau, Stanley W. Cowan | 1994-10-25 |
| 5342943 | Preparation of 1H pyrazolo [3,2-c]-S-triazole compounds | Philip T. S. Lau | 1994-08-30 |
| 5340708 | Photographic elements containing new dye-forming tris couplers | Philip T. S. Lau, Stanley W. Cowan | 1994-08-23 |
| 5276158 | Method of preparing 5-amino-3-substituted-pyrazole | — | 1994-01-04 |