Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7108964 | Compound containing an anthranilic acid blocking group | Stephen P. Singer, Philip A. Allway, Trevor J. Wear, Louis E. Friedrich, Siu (Lambert) C. Tsoi +1 more | 2006-09-19 |
| 6730465 | Color photographic element containing a heterocyclic dye-forming coupler | Philip A. Allway | 2004-05-04 |
| 6410216 | Method of forming a photographic color image | David Clarke | 2002-06-25 |
| 6238855 | Photographic element containing a DIR coupler | Philip A. Allway, Christina M. Watts | 2001-05-29 |
| 6200741 | Photographic addenda | John D. Goddard | 2001-03-13 |
| 6010837 | Silver halide photographic element comprising image dye-forming couplers | Bernard A. Clark, Michael W. Crawley, Jane S. Boff, Christina M. Watts, Stephen P. Singer | 2000-01-04 |
| 5876912 | Pyrazolo 1,5 a benzimidazole photographic color couplers | Michael W. Crawley, Andrew Gibson, Hugh M. Williamson | 1999-03-02 |
| 5667946 | Photographic material containing magenta dye forming coupler | Jane S. Boff, Bernard A. Clark, Christina M. Watts, Stephen P. Singer | 1997-09-16 |
| 5552266 | Photographic material comprising a magenta dye image forming coupler combination | Christina M. Watts | 1996-09-03 |
| 5498515 | Photographic element containing a certain sulfonated acylacetanilide coupler in combination with low- or non-chloride emulsions | Paul B. Merkel, Jerrold N. Poslusny, Hugh M. Williamson, Bernard A. Clark | 1996-03-12 |
| 5451493 | Photographic element containing a certain sulfonated acylacetanilide coupler in combination with a development inhibitor releasing coupler | Paul B. Merkel, Jerrold N. Poslusny, James P. Merrill, Bernard A. Clark, Hugh M. Williamson | 1995-09-19 |
| 5451492 | Photographic elements containing certain acylacetanilide couplers in combination with development inhibitor releasing couplers | Paul B. Merkel, Jerrold N. Poslusny, James P. Merrill, Bernard A. Clark | 1995-09-19 |
| 5415981 | Photographic silver halide color materials | David Clarke | 1995-05-16 |
| 5411841 | Photographic elements containing magenta couplers and process for using same | Stephen P. Singer, Paul B. Merkel, Bernard A. Clark | 1995-05-02 |
| 5385816 | Photographic silver halide color materials with sulfonylhydrazine color developer | Siu C. Tsoi | 1995-01-31 |
| 5350667 | Photographic elements containing magenta couplers and process for using same | Stephen P. Singer, Paul B. Merkel, Bernard A. Clark | 1994-09-27 |
| 5284739 | Photographic silver halide color material having incorporated therein a ballasted heterocyclic-sulphonhydrazide color developing agent | David Clarke, John D. Goddard, Nigel E. Milner | 1994-02-08 |
| 5256528 | Magenta image-dye couplers of improved hue | Paul B. Merkel, Stephen P. Singer, Bernard A. Clark | 1993-10-26 |
| 4900657 | Novel pyrazolone photographic color couplers and photographic elements containing them | Michael W. Crawley | 1990-02-13 |