Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8018174 | Safety circuit for electro-luminescent lamp ballast | Chang-Yi Liu | 2011-09-13 |
| 7990362 | Constant brightness control for electroluminescent lamp | — | 2011-08-02 |
| 7816864 | Double-shielded electroluminescent panel | Huei-Pin Huang | 2010-10-19 |
| 7719210 | Constant brightness control for electro-luminescent lamp | — | 2010-05-18 |
| 7561397 | Limited current circuit for electro-luminescent lamp inverter | Chang-Yi Liu, En-Ming Wu | 2009-07-14 |
| 7372216 | Constant brightness control for electro-luminescent lamp | — | 2008-05-13 |
| 6562431 | Packaged set of luminous disk with DIY surface and method of its use | Shaw-Jong Wang, Chien-Hua Wu | 2003-05-13 |
| 6513951 | Portable apparatus for use with a light-emitting disk | Shaw-Jong Wang, Chien-Hua Wu | 2003-02-04 |
| 6011398 | Current-leakage tester | Roger A. Bald, Pin-Yi Chen | 2000-01-04 |