Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6474153 | Predicting system and predicting method configured to predict inflow volume of rainwater | Osamu Yamanaka, Masajiro Nakada, Masahiko Tsutsumi | 2002-11-05 |
| 6303027 | Apparatus for controlling quality of treated water | Osamu Yamanaka, Masahiko Tsutsumi, Yasuhiko Nagamori, Yukio Hatsushika, Masajiro Nakada +4 more | 2001-10-16 |