Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5614360 | Photographic element and coating composition | Kenneth G. Harbison, Thomas H. Whitesides, James A. Friday | 1997-03-25 |
| 5312646 | Method for manufacturing photographic material | Eugene H. Barbee, Kathleen Bonsignore, Christopher J. Klasner, Avonelle L. Leonard, Daniel G. Ocorr | 1994-05-17 |
| 4892808 | Photographic material protected against hydrogen cyanide gas | Kenneth G. Harbison | 1990-01-09 |
| T105001 | Adsorbable alkynyl substituted heterocyclic quaternary ammonium salts and applications thereof to silver halide photography | Richard L. Parton, Karl E. Wiegers | 1985-01-01 |
| 4471044 | Silver halide emulsions and photographic elements containing adsorbable alkynyl substituted heterocyclic quaternary ammonium salts | Richard L. Parton, Karl E. Wiegers | 1984-09-11 |
| 4447523 | Photographic elements containing 2,4-disulfonamidophenol scavengers for oxidized developing agents | Robert E. Ross | 1984-05-08 |