Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10360789 | Fire notification system and test method using test jig therefor | David Brown, Manabu Dohi, Kiyoaki Koyama, Hiroyuki Kase | 2019-07-23 |
| 6249220 | Detected information display system in fire detecting system | Yukiko Kaji, Mitsuhiro Kurimoto, Kiyoaki Koyama, Naoya Matsuoka, Kumiko Ando | 2001-06-19 |