Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258720 | Digital sample and hold phase detector | William J. Tanis, Ning Lu | 1993-11-02 |
| 5258724 | Frequency synthesizer | William J. Tanis, Ning Lu | 1993-11-02 |
| 4935706 | Tuning apparatus for high speed phase locked loops | — | 1990-06-19 |
| 4926140 | High gain zero offset linear phase detector apparatus | — | 1990-05-15 |