Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5620766 | Magneto-optical disk | Kenji Uchiyama, Masanori Shibahara | 1997-04-15 |
| 5541910 | Optical disk substrate and optical disk using the same | Toshifumi Tanaka, Kazuki Suzawa | 1996-07-30 |