Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5170177 | Method of operating an ink jet to achieve high print quality and high print rate | Douglas M. Stanley, Joy Roy, Jeffrey J. Anderson | 1992-12-08 |
| 5124716 | Method and apparatus for printing with ink drops of varying sizes using a drop-on-demand ink jet print head | Joy Roy | 1992-06-23 |
| 4746934 | Color image copying system using a cathode-ray tube with diffraction grating face plate | — | 1988-05-24 |