Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11225178 | Slim headrest device | Sang Man Seo, Hae Il Jeong | 2022-01-18 |
| 10637350 | Power factor correction circuit and driving method thereof | Hyun-Chul Eum, Taesung Kim, Young Jong Kim | 2020-04-28 |
| 10241143 | Sensing resistor short determiner, switch control circuit including the same and power supply including the switch control circuit | Hyun-Chul Eum, Yong-Sang SHIN | 2019-03-26 |
| 9979303 | Primary side regulation power supply device | Hyun-Chul Eum, Eung-Woo Lee | 2018-05-22 |
| 9935538 | Power factor correction circuit and driving method thereof | Hyun-Chul Eum, Taesung Kim, Young Jong Kim | 2018-04-03 |
| 9748849 | Power supply | Hyun-Chul Eum, Young Jong Kim | 2017-08-29 |
| 9680455 | Clamping circuit, power supply device including the same and driving method of power supply device | Hyun-Chul Eum, Chi-Yin Lo | 2017-06-13 |
| 9647564 | Power supply device | Hyun-Chul Eum, Young Jong Kim | 2017-05-09 |
| 9590509 | Power supply device | Hyun-Chul EOM, Young Jong Kim | 2017-03-07 |
| 9502983 | Power supply device capable of varying switching frequency according to load condition | Kyung-Oun Jang, Hyun-Chul Eum, Sung-Won Yun | 2016-11-22 |
| 9325255 | Switch controller, switch control method, and power supply device comprising the switch controller | Seung-Uk YANG, Gye-Hyun Cho, Hyun-Chul EOM | 2016-04-26 |
| 9184653 | Short sensing circuit, short sensing method and power supply device comprising the short sensing circuit | Hyun-Chul EOM | 2015-11-10 |
| 9001533 | Feedback circuit and power supply device including the same | Won-Seok Kang, Gye-Hyun Cho | 2015-04-07 |
| 8872434 | Constant-current-drive LED module device | Hye Man Jung, Seok Jin Ha, Sang Shin Koo, Jong Hyun Kim | 2014-10-28 |