Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4698644 | Drop-on-demand ink jet print head | Walter F. Baier, Francis Chee-Shuen Lee, Ross N. Mills, Horst G. Mossbrugger | 1987-10-06 |
| 4266231 | Ink jet with retractable electrode and secondary ink catcher | Arthur L. Mix, Jr., Robert T. Ritchie | 1981-05-05 |