Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10243558 | Complementary metal-oxide-semiconductor (CMOS) inverter circuit device | Beom-seon Ryu, Tae-Kyoung Kang | 2019-03-26 |
| 10231302 | Power factor correction control circuit and driving method thereof | Tae-Kyoung Kang, Zhi Yuan Cui | 2019-03-12 |
| 9961742 | Multi-channel LED driver with overheating protection capabilities | Hyun Mo Ahn, Zhi Yuan Cui, Seung Hwan Lee, In Ho Hwang, James Jung | 2018-05-01 |
| 9887621 | Power factor correction circuit and method for correcting power factor, converter device thereof | Zhi Yuan Cui, In Ho Hwang, Young Gi Ryu, Sang Hoon Jeong | 2018-02-06 |
| 9888552 | Detecting circuit for short of LED array and LED driving apparatus using the same | Tae-Kyoung Kang, Beom-seon Ryu, Jun Sik Min | 2018-02-06 |
| 9875697 | Parallel constant current LED driving units for driving a LED string and method of performing the same | Tae-Kyoung Kang, Su Jin Lee | 2018-01-23 |
| 9788372 | Gate off delay compensation circuit and light apparatus having the same | Jong Hyun Yoon, Zhi Yuan Cui, Yong Gi Ryu | 2017-10-10 |
| 9692404 | Power factor correction controlling circuit and driving method thereof | Zhi Yuan Cui, In Ho Hwang, Young Gi Ryu, Jun Sik Min | 2017-06-27 |
| 9642197 | Circuit for compensating bipolar junction transistor base current and LED driving apparatus having the same | Jun Sik Min | 2017-05-02 |
| 9521719 | Circuit for driving lighting apparatus and method thereof | Tae Il Yun, Beom-seon Ryu | 2016-12-13 |
| 9490692 | Circuit and method of correcting a power factor for AC direct lighting apparatus | Jin Wook Kim, Jong Hyun Yoon | 2016-11-08 |
| 9253834 | LED driver circuit having a sensing unit | Hyoung Kyu Kim, Tae-Kyoung Kang, Jin Wook Kim | 2016-02-02 |
| 8497726 | Level shifter | Beom-seon Ryu | 2013-07-30 |