Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5932866 | Optical card with a built-in IC module technical field | Yosuke TERADA, Shigeo Hachiki, Seiichi Nishikawa, Yoshihiro Azuma | 1999-08-03 |
| 5698284 | Optical recording medium | Takeshi Kubota, Seiichi Nishikawa, Tetsuo Komori | 1997-12-16 |
| 5211770 | Magnetic recording powder having a high coercive force at room temperatures and a low curie point | Ginya Ishiguro, Kouichi Ishiyama, Yoshinari Ishii, Takuo Takeshita, Yasuaki Yoshioka | 1993-05-18 |