Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487149 | Optical recording and reproducing methods for optical disk | Akihiko Shimizu, Hiroshi Koide | 2002-11-26 |
| 6459666 | Information recording apparatus and method | — | 2002-10-01 |
| 6426929 | Information recording method | Teruyasu Watabe | 2002-07-30 |