Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8305209 | Alarm device | Makoto Masuyama, Toshimitsu Watanabe | 2012-11-06 |
| 8269642 | Alarm system and alarm device | Makoto Masuyama, Toshimitsu Watanabe | 2012-09-18 |
| 7297970 | Flame detector | Takatoshi Yamagishi, Kazuhisa Nakano | 2007-11-20 |