Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348783 | Optical information recording medium | Eiji Ohno, Noboru Yamada, Kenichi Nishiuchi, Nobuo Akahira | 1994-09-20 |
| 5346740 | Optical information recording medium | Eiji Ohno, Noboru Yamada, Kenichi Nishiuchi, Nobuo Akahira | 1994-09-13 |
| 5305303 | Optical information recording medium | Nobuo Akahira, Eiji Ohno, Kenichi Nishiuchi, Noboru Yamada | 1994-04-19 |