Issued Patents All Time
Showing 1–3 of 3 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 |
| 6770877 | Method and apparatus for analyzing vapors generated from explosives | Toshihiko Ohta, Yasuaki Takada, Hisashi Nagano | 2004-08-03 |
| 5173735 | Image forming apparatus with improved cleaning operation | — | 1992-12-22 |