Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5437931 | Optically variable multilayer film and optically variable pigment obtained therefrom | Rung-Ywan Tsai, Chaur-Tsang Wei, Fang-Chuan Ho, Gi-Horng Chuang | 1995-08-01 |
| 5408232 | Traffic signal device with interchangeable lamps | Rung-Ywan Tsai, Chaur-Tsang Wei, Fang-Chuan Ho | 1995-04-18 |