Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6185170 | Method for tracking an optical disc of a shallow/deep groove type and apparatus adopting the same | Du-seop Yoon, Myoung-june Kim, Byeung-Lyong Gill | 2001-02-06 |
| 4807213 | Laser drum for use in recording and reproducing information on optical tapes | Hae Woong Kwon, Tae Seok Park | 1989-02-21 |