Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5138302 | Photoelectric, scattered light smoke detector | Akira Nagaoka, Shigeki Shimomura, Masao Arakawa, Tomizo Terasawa, Masanobu Ogawa | 1992-08-11 |
| 5025169 | Sensor in IC formation | Masao Arakawa, Tomizo Terasawa, Masanobu Ogawa | 1991-06-18 |