Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5291006 | Authenticity identifying system for information storage cards | Hiroaki Nishiguma, Yoshiaki Seki | 1994-03-01 |
| 5200794 | Optical head for an optical authenticity identifing system | Hiroaki Nishiguma, Yoshiaki Seki | 1993-04-06 |