Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6862375 | Skew compensation for raster image transfer device | Douglas G. Keithley, James R. Emmert | 2005-03-01 |
| 6819452 | Method and system for modifying portions of an image bit stream representing printing horizontal lines and edges to improve print quality | Dean Richtsmeier, David R. Larson, Bruce J. Jackson, Douglas G. Keithley | 2004-11-16 |
| 6693723 | Image forming device fast draft print mode | Douglas G. Keithley | 2004-02-17 |
| 6577254 | Data compression/decompression system | — | 2003-06-10 |
| 6407830 | Sensor assemblies for color optical image scanners optical scanner and methods of scanning color images | Douglas G. Keithley | 2002-06-18 |
| 6356670 | Conversion of error-diffused facsimile images to lower resolutions | Douglas G. Keithley | 2002-03-12 |