Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6798539 | Method for moire-free color halftoning using non-orthogonal cluster screens | Zhigang Fan, Zhenhuan Wen | 2004-09-28 |
| 6775029 | Method for efficient calibration of printing devices | Zhenhuan Wen, Fritz Francis Ebner | 2004-08-10 |
| 6731409 | System and method for generating color digital watermarks using conjugate halftone screens | — | 2004-05-04 |
| 6717696 | Systems and methods for moiré-reduced halftoning | Zhigang Fan | 2004-04-06 |