Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6297935 | Connecting device for use in a head drum assembly | Dong-Han Kang, Kook Hyun Park | 2001-10-02 |
| 6034844 | Video cassette recorder equipped with head drum assembly having a bearing with pumping vanes | — | 2000-03-07 |
| 5924182 | Apparatus for assembling bearing and stationary drum | — | 1999-07-20 |
| 5665900 | Apparatus for testing wear-resistance of a pinch roller to be incorporated in a video cassette recorder | — | 1997-09-09 |