Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7455959 | Photographic element containing a speed-enhancing compound | Philip A. Allway, Tania Zuberi, Stephen P. Singer, Charles E. Heckler, Louis E. Friedrich | 2008-11-25 |
| 7354701 | Photographic element with speed-enhancing compound | Philip A. Allway, Tania Zuberi, Stephen P. Singer, Charles E. Heckler, Louis E. Friedrich | 2008-04-08 |
| 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 |
| 6887656 | Color photographic element containing improved heterocyclic speed enhancing compound | Louis E. Friedrich, Philip A. Allway, Judith A. Bogie, Charles E. Heckler, Stephen P. Singer | 2005-05-03 |
| 6589724 | Color photographic element containing speed-improving benzotriazole polymer | Stephen P. Singer, David S. Ross, Philip A. Allway, David B. Bailey, Louis E. Friedrich | 2003-07-08 |
| 6455242 | Color photographic element containing speed improving compound | Philip A. Allway, John D. Goddard, Louis E. Friedrich, James A. Friday, Stephen P. Singer +1 more | 2002-09-24 |
| 6319660 | Color photographic element containing speed improving compound | Philip A. Allway, John D. Goddard, Louis E. Friedrich, James A. Friday, Stephen P. Singer +1 more | 2001-11-20 |
| 6197488 | Color photographic element containing a coupler releasing derivative with at least three heteroatoms with specific hydrophobicity | Philip A. Allway, Louis E. Friedrich, Stephen P. Singer | 2001-03-06 |
| 6190848 | Color photographic element containing ballasted triazole derivative and inhibitor releasing coupler | Jane S. Boff, Louis E. Friedrich, Stephen P. Singer | 2001-02-20 |
| 6140029 | Color photographic element containing elemental silver and nitrogen heterocycle in a non-light sensitive layer | Jane S. Boff, Philip A. Allway, Louis E. Friedrich, Stephen P. Singer | 2000-10-31 |
| 6054257 | Photographic element containing particular coupler and inhibitor releasing coupler | Jane S. Boff, Louis E. Friedrich, Stephen P. Singer | 2000-04-25 |
| 6010837 | Silver halide photographic element comprising image dye-forming couplers | Michael W. Crawley, Jane S. Boff, Christina M. Watts, Stephen P. Singer, Paul L. Stanley | 2000-01-04 |
| 5981158 | Photographic element containing a DIR coupler | Paul B. Merkel, Jerrold N. Poslusny, James H. Reynolds, Robert Gourley | 1999-11-09 |
| 5693458 | Photographic elements containing certain yellow dye-forming couplers | Robert Gourley, Hamish McNab, Craig Cameron Sommerville | 1997-12-02 |
| 5674667 | Photographic element containing pyrroloylacetamide yellow coupler | Hamish McNab, Craig Cameron Sommerville | 1997-10-07 |
| 5667946 | Photographic material containing magenta dye forming coupler | Jane S. Boff, Paul L. Stanley, Christina M. Watts, Stephen P. Singer | 1997-09-16 |
| 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, Paul L. Stanley | 1996-03-12 |
| 5492799 | Azopyrazolone masking couplers | Daniel L. Kapp, Robert J. Ross, Stephen P. Singer | 1996-02-20 |
| 5474889 | Hydrophilic colloid composition for a photographic material | Alan R. Pitt, John F. Padday | 1995-12-12 |
| 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, Paul L. Stanley, 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, Paul L. Stanley | 1995-09-19 |
| 5411841 | Photographic elements containing magenta couplers and process for using same | Stephen P. Singer, Paul B. Merkel, Paul L. Stanley | 1995-05-02 |
| 5366857 | Hydrophilic colloid composition for a photographic material | Alan R. Pitt, John F. Padday | 1994-11-22 |
| 5350667 | Photographic elements containing magenta couplers and process for using same | Stephen P. Singer, Paul B. Merkel, Paul L. Stanley | 1994-09-27 |
| 5256528 | Magenta image-dye couplers of improved hue | Paul B. Merkel, Stephen P. Singer, Paul L. Stanley | 1993-10-26 |