Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5962198 | Photographic elements containing cyan dye-forming coupler having a particular formula | Philip T. S. Lau, Stanley W. Cowan | 1999-10-05 |
| 5686235 | Photographic elements containing cyan dye-forming coupler having a sulfone ballast group | Philip T. S. Lau, Stanley W. Cowan | 1997-11-11 |
| 5674666 | Photographic elements containing new cyan dye-forming coupler providing improved color reproduction | Philip T. S. Lau, Stanley W. Cowan | 1997-10-07 |
| 5670302 | Photographic elements containing new magenta dye-forming couplers | Philip T. S. Lau, Stanley W. Cowan | 1997-09-23 |
| 5541024 | Toner particles produced by limited coalescence polymerization | Mridula Nair, Zona R. Pierce | 1996-07-30 |
| 5378269 | Recording liquids for ink-jet recording | Sunita P. Chavan | 1995-01-03 |
| 5334435 | Ink-jet recording liquids | Sunita P. Chavan | 1994-08-02 |
| 5283165 | Pyrrolinone dyes | Donald R. Diehl, Margaret J. Helber | 1994-02-01 |
| 5102764 | Styrene butylacrylate toner with magenta dye | Julie P. Harmon | 1992-04-07 |
| 4997737 | Electrophotographic elements containing dicyanomethylenefluorene derivatives as electron-transport agents | Douglas E. Bugner, Teh-Ming Kung | 1991-03-05 |
| 4948911 | Fluorenone derivatives | Douglas E. Bugner, Teh-Ming Kung | 1990-08-14 |
| 4725867 | Apparatus for forming a multi-color image on an electrophotographic element which is sensitive to light outside the visible spectrum | Yee S. Ng, Domenic Santilli | 1988-02-16 |
| 4701396 | Photoconductive phthalocyanine pigments, electrophotographic elements containing them and a method of use | Yann Hung, Thomas Klose, Michael T. Regan | 1987-10-20 |
| 4654282 | Plural electrophotographic toned image method | Yee S. Ng, Domenic Santilli | 1987-03-31 |
| 4414152 | Bis aryl-azo derivatives of 2,3-naphthalenediol | Domenic Santilli, Jeanne E. Kaeding | 1983-11-08 |
| 4414320 | Bis aryl-azo derivatives of 2,3-naphthalenediol and electrophotographic liquid developer compositions containing them | Domenic Santilli, Jeanne E. Kaeding | 1983-11-08 |
| 4293626 | Electrophotosensitive materials for migration imaging processes | Frank G. Webster, Michael T. Regan | 1981-10-06 |
| 4282354 | Electrophoretic migration imaging process | James A. Van Allan, Melvin S. Bloom, Michael T. Regan, Hal E. Wright, Joseph Y. Kaukeinen | 1981-08-04 |
| 4272595 | Electrophotosensitive materials for migration imaging processes | Frank G. Webster, Michael T. Regan | 1981-06-09 |
| 4255506 | Electrophoretic migration imaging dispersion | James A. Van Allan, Melvin S. Bloom, Michael T. Regan, Hal E. Wright, Joseph Y. Kaukeinen | 1981-03-10 |
| 4247459 | Azo dye derivatives of 2,3-naphthalenediols | John A. Ford | 1981-01-27 |