Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6740482 | High chloride emulsion having high sensitivity and low fog | Roger Lok | 2004-05-25 |
| 6422736 | Scalable impeller apparatus for preparing silver halide grains | Michael G. Antoniades, Harold G. Judd, Katrin Parsiegla, Douglas E. Singer, Donald R. Irwin +3 more | 2002-07-23 |
| 6350567 | Precipitation of high chloride content silver halide emulsions | Roger L. Klaus, Jeri L. Mount | 2002-02-26 |
| 6033842 | Preparation of silver chloride emulsions having iodide containing grains | Roger Lok, Weimar W. White | 2000-03-07 |
| 5792601 | Composite silver halide grains and processes for their preparation | James L. Edwards, Eric L. Bell, Roger Lok | 1998-08-11 |
| 5783372 | Digital imaging with high chloride emulsions containing iodide | Jerzy A. Budz, Jerzy Z. Mydlarz, James L. Edwards | 1998-07-21 |
| 5736310 | Cubical grain silver iodochloride emulsions and processes for their preparation | James L. Edwards, Roger Lok, Sanford Howard Ehrlich | 1998-04-07 |
| 5728516 | Photographic print elements containing cubical grain silver iodochloride emulsions | James L. Edwards, Sanford Howard Ehrlich | 1998-03-17 |
| 5726005 | Photographic print elements containing cubical grain silver iodochloride emulsions | James L. Edwards, Roger Lok, Sanford Howard Ehrlich | 1998-03-10 |
| 5674674 | Low staining green spectral sensitizing dyes and silver chloride emulsions containing iodide | James L. Edwards, Richard L. Parton | 1997-10-07 |
| 5605789 | Iodochloride emulsions containing iodonium salts having high sensitivity and low fog | Roger Lok | 1997-02-25 |
| 5550013 | High chloride emulsions having high sensitivity and low fog and improved photographic responses of HIRF, higher gamma, and shoulder density | Roger Lok | 1996-08-27 |
| 5547827 | Iodochloride emulsions containing quinones having high sensitivity and low fog | Roger Lok | 1996-08-20 |
| 5512103 | Silver halide color photography element with improved high density contrast and bright low density colors | James L. Edwards, Eric L. Bell, Richard L. Parton | 1996-04-30 |
| 5418118 | Silver halide color photographic element with improved high density contrast and bright low density colors | James L. Edwards, Eric L. Bell, Richard L. Parton | 1995-05-23 |
| 5380629 | Method of making and a photographic element containing bleach accelerator silver salts | — | 1995-01-10 |