Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826137 | Apparatus and method for authentication/copy protection of optical storage medium and the optical storage medium | Jae Sun Lee, Yong-Hoo Sheen | 2004-11-30 |
| 6714497 | Method for forming an information recording medium having information on spare area, and method and apparatus for recording/reproducing data to/from the medium | Yeo Han Yun | 2004-03-30 |
| 6690634 | Method for forming an information recording medium having information on spare area, and method and apparatus for recording/reproducing data to/from the medium | Yeo Han Yun | 2004-02-10 |
| 6654330 | Method for forming an information recording medium having information on spare area, and method and apparatus for recording/reproducing data to/from the medium | Yeo Han Yun | 2003-11-25 |
| 6597648 | Optical disk having anti-piracy function and method of fabricating and authenticating the optical disk | Jae Sun Lee | 2003-07-22 |
| 6510114 | Method for forming an information recording medium having information on spare area, and method and apparatus for recording/reproducing data to/from the medium | Yeo Han Yun | 2003-01-21 |
| 6404730 | Optical disk having a groove and a projection for combining two disk members | Hyung Kyu Kim | 2002-06-11 |
| 6295182 | Disc cartridge | Chang Jong Kim | 2001-09-25 |