Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6660356 | Optical information recording medium, method for producing the same, and method and apparatus for recording/reproducing information thereon | Noboru Yamada | 2003-12-09 |
| 6610380 | Optical information recording medium, manufacturing method, recording and reproduction method, and recording/reproduction device | Noboru Yamada | 2003-08-26 |