Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7037413 | Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information | Noboru Yamada, Katsumi Kawahara, Hiroyuki Ohta, Eiji Ohno, Ken'ichi Nagata | 2006-05-02 |
| 6153063 | Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information | Noboru Yamada, Kenichi Nagata, Katsumi Kawahara | 2000-11-28 |