Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4375668 | Timing optimization control | Chun K. Leung, Edwin A. Johnson | 1983-03-01 |
| 4357662 | Closed loop timing and fuel distribution controls | Chun K. Leung | 1982-11-02 |
| 4258684 | Digital ignition timing controller | — | 1981-03-31 |