Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5432541 | Nozzle drive control system and method for ink jet printing | Robert I. Keur, James E. Clark | 1995-07-11 |
| 5196860 | Ink jet droplet frequency drive control system | Robert I. Keur, James E. Clark | 1993-03-23 |