Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7091870 | Security system and method of security service business | Hirofumi Tsutsumi, Keiko Nakashige, Seiji Tanaka, Yoshihiro Nishikawa, Yasuaki Takada +3 more | 2006-08-15 |