Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6097915 | AC scorotron | Kenneth W. Pietrowski, Jing Song | 2000-08-01 |
| 5613172 | Hybrid DC recharge method and apparatus for split recharge imaging | Kenneth W. Pietrowski | 1997-03-18 |
| 5600430 | Split recharge method and apparatus for color image formation | Jeffrey J. Folkins, Roger L. Bullock, Kenneth W. Pietrowski, Charles H. Tabb, Zhao-Zhi Yu +1 more | 1997-02-04 |
| 5581330 | Method and apparatus for reducing residual toner voltage | Kenneth W. Pietrowski, Samuel W. Ing, Roger L. Bullock, Charles H. Tabb, Zhao-Zhi Yu +3 more | 1996-12-03 |