Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323455 | Compact type fluid treatment apparatus | Yoshinobu Tanaka, Koichi Ogawa | 1982-04-06 |
| 4310416 | Plate type fluid treatment apparatus | Yoshinobu Tanaka, Koichi Ogawa | 1982-01-12 |