Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6975227 | Method for controlling coming and going personnel, and a system thereof | Yoshihiro Nishikawa, Yasunobu Fujita | 2005-12-13 |
| 6621414 | Method of controlling coming and going personnel, and a system thereof | Yoshihiro Nishikawa, Yasunobu Fujita | 2003-09-16 |