Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6411593 | Optical disc substrate | Chang-Min Park | 2002-06-25 |
| 6400660 | Optical disk and apparatus for reading the same based upon the length of a mirror region | Kyung-geun Lee, Myoung-june Kim, Young-man Ahn | 2002-06-04 |