Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581167 | Information recording medium, information recording method and information recording/reproduction system | Yoshiho Gotoh, Hiroshi Ueda, Yoshihisa Fukushima | 2003-06-17 |
| 6564338 | Information recording medium, and method and apparatus for managing defect thereof | Shinji Sasaki, Hiroshi Ueda, Yoshihisa Fukushima | 2003-05-13 |
| 6552982 | Information recording medium, information recording and reproduction method, and information recording and reproduction apparatus | Toshiyuki Fukushima, Shinji Sasaki | 2003-04-22 |