Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6392768 | Dot matrix hologram with a hidden image | I-En Tsai, Hsiu-Hung Lin | 2002-05-21 |
| 6317226 | Dot matrix hologram for hiding a moire pattern | Jie Lan, Hsiu-Hung Lin | 2001-11-13 |