Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4786941 | Method of protection of confidential documents | — | 1988-11-22 |
| 4746741 | N,N'-bis[2-(3-methylphenyl)ethyl]-perylene-3,4:9,10-bis (dicarboximide) compound use thereof in multi-active photoconductive insulating elements exhibiting far red sensitivity | William J. Staudenmayer | 1988-05-24 |
| 4727139 | Pigments and photoconductive elements sensitive to infrared radiation | Yann Hung, William J. Staudenmayer | 1988-02-23 |
| 4719163 | Multi-active photoconductive insulating elements exhibiting far red sensitivity | William J. Staudenmayer | 1988-01-12 |
| 4701396 | Photoconductive phthalocyanine pigments, electrophotographic elements containing them and a method of use | Yann Hung, Thomas Klose, Louis J. Rossi | 1987-10-20 |
| 4666802 | Photoconductive elements sensitive to infrared radiation having a bromoindium phthalocyanine pigment | Yann Hung, William J. Staudenmayer | 1987-05-19 |
| 4618560 | Multi-active photoconductive insulating elements exhibiting very high electrophotographic speed and panchromatic sensitivity and method for their manufacture | Paul M. Borsenberger, William J. Staudenmayer | 1986-10-21 |
| 4578334 | Multi-active photoconductive insulating elements and method for their manufacture | Paul M. Borsenberger, William J. Staudenmayer | 1986-03-25 |
| 4578330 | Hydroxyaluminumphthalocyanine having reduced green absorption | Hal E. Wright | 1986-03-25 |
| 4471039 | Photoconductive elements sensitive to radiation in the infrared region of the spectrum | Paul M. Borsenberger, Carl F. Groner | 1984-09-11 |
| 4382033 | Novel phthalocyanine pigments | — | 1983-05-03 |
| 4361636 | Ionic polyesters for electrically photosensitive composite particles, materials, elements and photoelectrophotoretic imaging methods | Henry V. Isaacson | 1982-11-30 |
| 4341894 | Sensitizers for photoconductive compositions | George A. Reynolds, Donald P. Specht, James A. VanAllan | 1982-07-27 |
| 4311775 | Novel phthalocyanine pigments and electrophotographic uses thereof | — | 1982-01-19 |
| 4293626 | Electrophotosensitive materials for migration imaging processes | Frank G. Webster, Louis J. Rossi | 1981-10-06 |
| 4282354 | Electrophoretic migration imaging process | James A. Van Allan, Louis J. Rossi, Melvin S. Bloom, Hal E. Wright, Joseph Y. Kaukeinen | 1981-08-04 |
| 4272595 | Electrophotosensitive materials for migration imaging processes | Frank G. Webster, Louis J. Rossi | 1981-06-09 |
| 4256819 | Organic electrophotosensitive materials for migration imaging processes | Frank G. Webster | 1981-03-17 |
| 4255506 | Electrophoretic migration imaging dispersion | James A. Van Allan, Louis J. Rossi, Melvin S. Bloom, Hal E. Wright, Joseph Y. Kaukeinen | 1981-03-10 |
| 4254198 | Electrophotosensitive materials for migration imaging processes | Frank G. Webster | 1981-03-03 |
| 4251609 | Isoquinolinedione photoelectrophoretic materials for imaging processes | James R. Nonnemacher, Frank G. Webster | 1981-02-17 |
| 4241157 | Organic heterocyclic electrophotosensitive materials for migration imaging processes | Frank G. Webster | 1980-12-23 |
| 4195990 | Electrophotographic papers employing organic photoconductors | William J. Staudenmayer, James A. Van Allan, William E. Yoerger | 1980-04-01 |