Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6612722 | Light guide panel for backlight | Chang-Yong Lee, Eun-Shik Lim, Shin-Hyung Lee | 2003-09-02 |
| 6063469 | Triple substrate optical disk and manufacturing method thereof | Chang-Yong Lee | 2000-05-16 |
| 5138510 | Flap of video tape cassette and its installing structure | — | 1992-08-11 |
| 5094434 | Support spring for a tape cassette | — | 1992-03-10 |
| 5091813 | Tape cartridge with T-shaped braking lever | — | 1992-02-25 |