Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9596723 | PWM signal generating circuit for DC-DC converter using dimming signal and LED driving circuit having the same in direct digital dimming method | Beom-seon Ryu | 2017-03-14 |
| 9532432 | LED driver apparatus | Wan-jik Lee, Ji Won Choi | 2016-12-27 |
| 9173260 | PWM signal generating circuit for DC-DC converter using dimming signal and LED driver circuit using the same in digital PWM method having fixed phase mode | Beom-seon Ryu | 2015-10-27 |
| 9024381 | Semiconductor device and fabricating method thereof | Moon Soo Cho, Kwang Yeon Jun, Hyuk Woo | 2015-05-05 |
| 8941327 | PWM controlling circuit and LED driver circuit having the same | Beom-seon Ryu, Tae-Kyoung Kang | 2015-01-27 |
| 8860320 | LED driver apparatus | Tae-Kyoung Kang, Eun Ah Ko, Beom-seon Ryu | 2014-10-14 |
| 8686652 | Reference voltage generating circuit and LED driver circuit having the same therein | Du-su Shin, Shane Baik | 2014-04-01 |
| 8651829 | Vacuum pump for vehicles | Ki-Ho Jung, Jang Ho Lee, Byung Jun Byun | 2014-02-18 |
| 8643289 | PWM controlling circuit and LED driver circuit having the same | Beom-seon Ryu, Jin Wook Kim | 2014-02-04 |
| 8581511 | Circuit and method for generating PWM signal for DC-DC converter using dimming signal and LED driving circuit for backlight having the same | Eung-Suen Kim, Jin-sub Han, Seung-beom Baik | 2013-11-12 |
| 8337143 | Actuator in turbocharger of vehicle and method for controlling the same | Seok Ryul Park, Sung Jong Yoon, Sung Dong Chang, Chae Hong Lim, Tae Wan Kim | 2012-12-25 |
| 8281771 | Exhaust gas recirculation valve in vehicle | Ki-Ho Jung, Yong Soo Jang, In Suk Choi, Dong-Wook Choi, Myeong Jae Lee | 2012-10-09 |
| 7971578 | Exhaust gas recirculation valve for vehicle | Ki-Ho Jung, Seok Ryul Park, Yong Soo Jang | 2011-07-05 |
| 6172573 | Oscillator having compensation for a schmitt trigger response delay | — | 2001-01-09 |
| 5841306 | Pulse generator for generating output pulse of a predetermined width | — | 1998-11-24 |
| 5739680 | Constant voltage control device | Young-Gi Ryou | 1998-04-14 |
| 5614857 | Hysteresis system with constant threshold voltage | Young-Gi Ryou | 1997-03-25 |
| 5319265 | Comparator with hysteresis | — | 1994-06-07 |