Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6075965 | Method and apparatus using an endless web for facilitating transfer of a marking particle image from an intermediate image transfer member to a receiver member | Thomas N. Tombs | 2000-06-13 |
| 5881347 | Biasing method and apparatus for electrostatically transferring an image | John W. May, Thomas N. Tombs | 1999-03-09 |
| 5839024 | Corona charging of a charge retentive surface | John W. May, Martin J. Pernesky | 1998-11-17 |
| 5724636 | Method and apparatus for transferring a toner image to a receiver sheet using an electrical bias | Thomas N. Tombs, John W. May | 1998-03-03 |
| 5666193 | Intermediate transfer of small toner particles | Donald S. Rimai, Thomas Nathaniel Tombs, David J. Quesnel | 1997-09-09 |
| 5642254 | High duty cycle AC corona charger | John W. May, Martin J. Pernesky | 1997-06-24 |
| 5070369 | Electrostatographic method and apparatus for producing multicolor duplex reproductions | Gregory P. Mahoney | 1991-12-03 |
| 4784928 | Reusable electrophotographic element | Hsin-Chia Kan, William J. Staudenmayer | 1988-11-15 |
| 4245272 | Apparatus and method for low sensitivity corona charging of a moving photoconductor | Allen J. Rushing, Paul Lachapelle | 1981-01-13 |
| 4228480 | Electrophotographic apparatus with improved corona charging | Paul Lachapelle | 1980-10-14 |