Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8419912 | Water quality analyzer | Kiyoshi Sagawa, Shinichi Harima, Kazuo Onaga, Osamu Inazawa | 2013-04-16 |
| 8025779 | Water quality analyzer | Kiyoshi Sagawa, Shinichi Harima, Kazuo Onaga, Osamu Inazawa | 2011-09-27 |
| 7194890 | Gas chromatograph and expired air component analyzer | Katsuyuki Tanaka, Mariko Sugimura, Noriko Kiyoshi, Kazuo Onaga, Hiroshi Koda | 2007-03-27 |