Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806948 | Ribbon separating mechanism for thermal printer | Michael Grey, Sik Piu Kwan | 1989-02-21 |
| 4717924 | Thermal printing control system | Sik Piu Kwan | 1988-01-05 |
| 4708500 | Thermal printer | Michael Grey | 1987-11-24 |
| 4661823 | Thermal print head | Michael Grey | 1987-04-28 |
| 4533569 | Process preventing air bubble lock in ink jet nozzles | — | 1985-08-06 |
| 4462037 | Ink level control for ink jet printer | Jacob Thomas | 1984-07-24 |
| 4454518 | Temperature control of ink for ink jet printer | — | 1984-06-12 |