Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9975204 | Laser marking system for coil springs | Won Gyu Song | 2018-05-22 |
| 9705401 | Buck-boost converters and power management integrated circuits including the same | Min-Soo Cho, Dong-Jin Keum, Il-Young Sohn, Ryotaro Kudo | 2017-07-11 |
| 9667239 | Voltage regulator having enhancing linearity | Takahiro Nomiyama, Dong-Jin Keum, Hoang Quoc Duong | 2017-05-30 |
| 9550203 | Marking system for springs | Dong Hyun Hwang | 2017-01-24 |