Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9466974 | Systems and methods for inductive overvoltage protection of PFC bulk capacitors in power supplies | Ya-Tang Hsieh, Tsung-Cheng Liao, Chang Yung Chang, Wei-Cheng Yu | 2016-10-11 |
| 9219352 | Power off delay circuit and method, and audio system with power off delay | Chien-Fu Tang, Isaac Y. Chen, An-Tung Chen | 2015-12-22 |
| 8674554 | Power off delay circuit and method, and audio system with power off delay | Chien-Fu Tang, Isaac Y. Chen, An-Tung Chen | 2014-03-18 |
| 8295022 | Overstress protection apparatus and method | Chien-Fu Tang, Isaac Y. Chen | 2012-10-23 |
| 6448819 | Fixed device for the bulb socket | — | 2002-09-10 |
| 6398385 | Fixed-device for the bulb socket | — | 2002-06-04 |
| 6394845 | Fixed device for the bulb socket | — | 2002-05-28 |