Issued Patents All Time
Showing 76–91 of 91 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5286613 | Photographic material comprising a combination of couplers forming washout and non-washout dyes | Hans G. Ling, Drake M. Michno | 1994-02-15 |
| 5283340 | Photographic material and process comprising wash-out naphtholic coupler | Teh-Hsuan Chen, Hans G. Ling, John W. Harder, Arlyce T. Bowne | 1994-02-01 |
| 5279929 | Photographic material and process comprising a coupler capable of forming a wash-out dye (C/C) | Drake M. Michno, Hans G. Ling, Teh-Hsuan Chen | 1994-01-18 |
| 5272043 | Photographic material and process comprising DIR coupler | Hans G. Ling | 1993-12-21 |
| 5264582 | Method of forming a photographic coupler capable of forming a wash-out dye | Robert C. Stewart | 1993-11-23 |
| 5264583 | Photographic coupler and method of making the same | Donald Singleton, Jr. | 1993-11-23 |
| 5250398 | Photographic silver halide material and process comprising water-solubilized naphtholic coupler | Teh-Hsuan Chen | 1993-10-05 |
| 5250399 | Photographic material and process comprising a universal coupler | Richard P. Szajewski, Jerrold N. Poslusny, David A. Steele, Teh-Hsuan Chen, Paul A. Burns +1 more | 1993-10-05 |
| 5239081 | Preparation of photographic compounds | Robert C. Stewart | 1993-08-24 |
| 5234800 | Photographic material and process comprising wash-out naphtholic coupler | Teh-Hsuan Chen, Hans G. Ling | 1993-08-10 |
| 5151343 | Photographic material and process comprising wash-out naphtholic coupler | Teh-Hsuan Chen, Hans G. Ling, John W. Harder, Arlyce T. Bowne | 1992-09-29 |
| 5026628 | Photographic material and process comprising a compound capable of forming a wash-out dye | Teh-Hsuan Chen, Kenneth N. Kilminster, Jerrold N. Poslusny, Wojciech K. Slusarek | 1991-06-25 |
| 5021322 | Photographic element comprising a development inhibitor releasing compound having a linking group between the carrier and the inhibitor | Teh-Hsuan Chen | 1991-06-04 |
| 4857440 | Photographic material and process (B) | Michael J. Carmody, John M. Buchanan | 1989-08-15 |
| 4847185 | Photographic material and process (A) | Michael J. Carmody, John M. Buchanan | 1989-07-11 |
| 4564577 | Naphthoquinone redox dye-releasers | — | 1986-01-14 |