Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6033569 | Method of biologically removing nitrogen and system therefor | Tatsuo Sumino, Nobuko Hashimoto, Hiroki Nakamura, Kazuhiko Noto, Takako Ogasawara +2 more | 2000-03-07 |
| 5997736 | Method of biologically removing nitrogen and system therefor | Tatsuo Sumino, Nobuko Hashimoto, Hiroki Nakamura, Kazuhiko Noto, Takako Ogasawara +2 more | 1999-12-07 |
| 5876603 | Method of biologically removing nitrogen and system therefor | Tatsuo Sumino, Nobuko Hashimoto, Hiroki Nakamura, Kazuhiko Noto, Takako Ogasawara +2 more | 1999-03-02 |
| 5849180 | Method of biologically removing nitrogen and system therefor | Tatsuo Sumino, Nobuko Hashimoto, Hiroki Nakamura, Kazuhiko Noto, Takako Ogasawara +2 more | 1998-12-15 |