Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5276667 | Optical recording and reproducing apparatus for synchronizing recording on subsequent unrecorded sectors | Keiichi Tsutsui, Kouji Sogou | 1994-01-04 |
| 5155721 | Optical data storage accessing apparatus | Kazuo Tsuboi | 1992-10-13 |
| 5027339 | Optical card analyzing apparatus | Kouji Nitto | 1991-06-25 |