Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7151902 | Toner transfer technique | David M. Rakov, Graham S. Wright | 2006-12-19 |
| 6731890 | Transfer of toner using a time-varying transfer station current | David M. Rakov | 2004-05-04 |
| 5489972 | Cleaning mechanism for transfer member | Francisco L. Ziegelmuller | 1996-02-06 |
| 4647186 | Biased scavenging grid for electrographic apparatus | Timothy G. Armstrong, Arthur S. Kroll | 1987-03-03 |
| 4531832 | Electrographic apparatus, method and system employing image development adjustment | Arthur S. Kroll | 1985-07-30 |
| 4347298 | Electrographic development apparatus and method for use with partially-conductive developer | Arthur S. Kroll | 1982-08-31 |
| 4292921 | Electrographic development apparatus | Arthur S. Kroll | 1981-10-06 |