Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6580882 | Low cost trim-gap-conductivity TC sensor | Mark J. Hirsch, John F. Knapp, William H. Wayman | 2003-06-17 |
| 6566025 | Polymeric particles as external toner additives | Mary L. McStravick, Mark J. Hirsch, Ronald J. Koch | 2003-05-20 |
| 5666619 | Electrode wire support for scavengeless development | Steven C. Hart, Thomas J. Behe, Mark J. Hirsch, Alexander J. Fioravanti | 1997-09-09 |
| 5059990 | Image transfer and sheet seperation charging | Christian O. Abreu, Jon M. Beresniewicz, James A. Long | 1991-10-22 |
| 4639124 | Cleaning system for a multicolor electrophotographic printing machine | Leroy M. Nye | 1987-01-27 |