Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9780771 | Gate driving circuit including constant current sources, and switching apparatus and power supply apparatus having the same | Deuk Hee Park, Yun Joong Lee, Joong Ho Choi, Je Hyeon YU, Hyeon Seon Yu +1 more | 2017-10-03 |
| 9755502 | Start-up circuit and power device using the same | Soo Hyun Moon, Hye Jin Lee, Joong Ho Choi, Ji Hwan Kim, Chang Seok Lee +1 more | 2017-09-05 |
| 9301353 | Light emitting diode driving apparatus | Deuk Hee Park, Yun Joong Lee | 2016-03-29 |
| 9287777 | Average current controller, average current control method and buck converter using the average current controller | Jong-Tae Hwang, Chan Woo Park, Deuk Hee Park, Yun Joong Lee | 2016-03-15 |
| 9204506 | Light emitting diode driving apparatus | Yun Joong Lee, Je Hyeon YU | 2015-12-01 |
| 9173265 | Light emitting diode driving apparatus and light emitting diode lighting apparatus | Deuk Hee Park, Chan Woo Park, Yun Joong Lee, Jong-Tae Hwang, Je Hyeon YU +3 more | 2015-10-27 |
| 9083248 | PWM control circuit, flyback converter and method for controlling PWM | Deuk Hee Park, Yun Joong Lee, Jae Shin Lee, Chang Seok Lee | 2015-07-14 |
| 9066399 | Illumination driving apparatus for light emitting diode and method thereof | Deuk Hee Park, Joong Ho Choi, Jae Shin Lee, Chang Seok Lee, Yun Joong Lee | 2015-06-23 |
| 9024531 | Apparatus for driving light emitting diode | Jong-Tae Hwang, Deuk Hee Park, Jae Shin Lee, Yun Joong Lee | 2015-05-05 |
| 8994281 | Light emitting diode driving apparatus | Jong-Tae Hwang, Deuk Hee Park, Chang Seok Lee, Yun Joong Lee | 2015-03-31 |
| 8981658 | Apparatus for driving light emitting diode | Yun Joong Lee, Je Hyeon YU, Deuk Hee Park | 2015-03-17 |
| 8975927 | Gate driver | Jong-Tae Hwang, Deuk Hee Park, Chang Seok Lee, Yun Joong Lee | 2015-03-10 |
| 8975824 | PWM driving circuit and PWM driving method | Yun Joong Lee, Deuk Hee Park, Jae Shin Lee, Chang Seok Lee | 2015-03-10 |
| 8917025 | Light emitting diode driving apparatus | Deuk Hee Park, Yun Joong Lee, Jae Shin Lee, Chang Seok Lee | 2014-12-23 |
| 8890431 | LED driving apparatus and method | Change Seok Lee, Yeun Joong Lee, Deuk Hee Park, Jae Shin Lee | 2014-11-18 |
| 8816589 | Light emitting diode driving apparatus | Youn Joong Lee, Deuk Hee Park, Jae Shin Lee, Chang Seok Lee | 2014-08-26 |
| 8796942 | LED circuit | Yeun Joong Lee, Deuk Hee Park, Jae Shin Lee, Change Seok Lee | 2014-08-05 |
| 8779682 | Illumination driving apparatus | Joong Ho Choi, Yeun Joong Lee, Deuk Hee Park, Chang Seok Lee | 2014-07-15 |
| 8749147 | LED circuit | Yeun Joong Lee, Deuk Hee Park, Jae Shin Lee, Change Seok Lee | 2014-06-10 |
| 8471788 | Organic light emitting diode driver | Yeun Joong Lee, Gyu-Hyeong Cho, Jin Yong Jeon, Jun Hyeok Yang, Hyun Sik Kim +1 more | 2013-06-25 |
| 8030991 | Frequency tuning and direct current offset canceling circuit for continuous-time analog filter with time divided | Chang Seok Lee | 2011-10-04 |