Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11464091 | AC direct LED driver including capacitor for LED driver | Jun Sik Kim | 2022-10-04 |
| 10447087 | Wireless power transmission apparatus for high efficiency energy charging | Ui Kun Kwon, Sang Joon Kim, Seung Keun Yoon, Yeong Seok Ko | 2019-10-15 |
| 10215968 | Optical lens assembly and electronic device including the same | Jae-cheol Bae, Ki-woo Lee | 2019-02-26 |
| 10148086 | Power switch capable of preventing reverse connection | Sang Hyun JANG, Sun Woo KIM, Hee Jun Lee, Jun Sik Kim, Jae Hyun Park | 2018-12-04 |
| 10111290 | Apparatus for synchronous driving of multi-channel light emitting diodes | — | 2018-10-23 |
| 9641016 | Wireless power transmission apparatus for high efficiency energy charging | Ui Kun Kwon, Sang Joon Kim, Seung Keun Yoon, Yeong Seok Ko | 2017-05-02 |
| 9601948 | Wireless power transmission apparatus and method | Ui Kun Kwon, Sang Joon Kim, Seung Keun Yoon, Young Seok Ko | 2017-03-21 |
| 9426858 | Device for driving multi-channel light-emitting diode | — | 2016-08-23 |
| 8467136 | Device for transferring optical elements | Hidemasa Ozawa | 2013-06-18 |
| 8300333 | Lens barrel and photographing apparatus including the same | Hidemasa Ozawa | 2012-10-30 |
| 6466391 | Head retraction circuit | Han Seung Lee | 2002-10-15 |
| 6181093 | Commutation circuit for a sensorless three-phase brushless direct curent motor | Yun-Kee Lee | 2001-01-30 |
| 5892339 | Three-phase brushless DC motor driving circuits and methods using one hall signal | Yun-Kee Lee | 1999-04-06 |
| 5835992 | Switching control signal generator for small precision motor | Hyung Choi | 1998-11-10 |
| 5808436 | Starting circuit and starting method for a brushless motor | Hyung Choi | 1998-09-15 |
| 5726543 | Sensorless, brushless DC motor start-up circuit using intermittently-accelerated-rate clock | Suk-Hoon Bahng, Nam-Jin Kang | 1998-03-10 |
| 5479122 | Sync signal detection apparatus | — | 1995-12-26 |