Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6290320 | Calibration technique for test patterns from multiple color inkjet printheads | Robert W. Beauchamp, Josep Tarradas | 2001-09-18 |
| 5975674 | Optical path optimization for light transmission and reflection in a carriage-mounted inkjet printer sensor | Robert W. Beauchamp, Josep Tarradas | 1999-11-02 |
| 5262797 | Monitoring and controlling quality of pen markings on plotting media | Robert A. Boeller, Thomas J. Halpenny, Josep Tarradas, Robert W. Beauchamp | 1993-11-16 |
| 5170047 | Optical sensor for plotter pen verification | Robert W. Beauchamp, Luis F. Granda | 1992-12-08 |