Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9740334 | Optical touch system and control method | Chih-Hsiung Chang | 2017-08-22 |
| D794866 | LED bulb lamp cover | Chih-Hsien Wu, Wei-Hsu Chang, Kai-Cheng Chuang, Hsin-Chieh Liao, Sen-Yuh Tsai +1 more | 2017-08-15 |
| 9572221 | Auto-sensing dimming lamp | Wei-Hsu Chang, Kai-Cheng Chuang | 2017-02-14 |
| 9418523 | Intelligent wireless doorbell alarm system | Chih-Hsien Wu, Wei-Hsu Chang, Kai-Cheng Chuang | 2016-08-16 |
| 9176631 | Touch-and-play input device and operating method thereof | Chih-Hsiung Chang, You-Xin Liu | 2015-11-03 |
| 9143183 | Coordinate transmitter, coordinate receiver and coordinate transceiver | Chih-Hsiung Chang, Shih-Chieh Liao | 2015-09-22 |
| 5614420 | Method of preventing mask tone error | Jhy-Sheng Sheu, Ren-Yih Zeng | 1997-03-25 |