Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6546376 | Electronic payment device using balanced binary tree and the method of the same | Sung-Ming Yen, Chiung-Ying Huang, Jack Lee | 2003-04-08 |
| 6499019 | Electronic payment device using unbalanced binary tree and the method of the same | Sung-Ming Yen, Chiung-Ying Huang, Jong-Ming Lee | 2002-12-24 |