Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10151693 | Photoelectric smoke sensor | Masao Iguchi, Tadayuki Shibuya, Shintaro Masumoto | 2018-12-11 |
| 10054542 | Photoelectric smoke detector | Masao Iguchi, Tadayuki Shibuya, Shintaro Masumoto | 2018-08-21 |
| 8743366 | Light emission portion, photoelectric smoke sensor, and suction-type smoke sensing system | Tadayuki Shibuya | 2014-06-03 |
| 7948627 | Photoelectric smoke detector | Masao Iguchi | 2011-05-24 |
| 7697140 | Photoelectric smoke detector | Masao Iguchi | 2010-04-13 |