Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7518844 | Over-voltage tolerant ESD protection circuit | Feng Xu, Sheng Zhang | 2009-04-14 |
| 7335028 | System and method for creating an individualized exam practice question set | — | 2008-02-26 |