Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6425606 | Diffractive anti-counterfeiting tag with naked-eye inspection and machine inspection | Ying-Tsung Lu, Jeng-Feng Lin, Pong Lai, Wann-Diing Tyan, Hoang-Yan Lin | 2002-07-30 |
| 6043913 | Apparatus for producing dot matrix hologram | Ying-Tsung Lu | 2000-03-28 |
| 5999280 | Holographic anti-imitation method and device for preventing unauthorized reproduction | — | 1999-12-07 |