Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6535635 | Error clipping for vector error diffusion | R. Victor Klassen | 2003-03-18 |
| 6483606 | Error diffusion on moderate numbers of output colors | R. Victor Klassen | 2002-11-19 |
| 6109656 | Notepad and notes adapted to be adhesively secured to an object | — | 2000-08-29 |
| 5982992 | Error diffusion in color printing where an intra-gamut colorant is available | — | 1999-11-09 |
| 5790281 | Method of correcting the measured reflectance of an image acquired by an image acquisition device for the integrating cavity effect | Keith T. Knox | 1998-08-04 |
| 5450502 | Image-dependent luminance enhancement | Reiner Eschbach, William A. Fuss | 1995-09-12 |
| 4661859 | Pulse width modulation greyscale system for halftone printer | Louis D. Mailloux | 1987-04-28 |