Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5500571 | Metal vapor discharge lamp | Atsunori Okada, Shigeaki Wada, Tohru Fujioka | 1996-03-19 |
| 5347665 | Carbonate spring bath system | Naoki Kumon, Harue Kawagoe, Shin Matsugi, Hiroshi KANO, Noriyoshi Nakaoka +4 more | 1994-09-20 |
| 5215643 | Electrochemical gas sensor | Toru Fujioka, Ayumu Yasuda, Noriyuki Yamaga, Yoshifumi Watabe, Kenji Doi +3 more | 1993-06-01 |
| 4490715 | Gas detector | Shigeo Akiyama, Tohru Nobutani, Hideo Kawamura | 1984-12-25 |
| 4458242 | Gas detector | Shigeo Akiyama, Tohru Nobutani | 1984-07-03 |