Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304308 | Control method in double-tank-type intermittent aeration activated sludge process | Yasuji Yamamoto, Kosei Sasaki, Shigeru Hatsumata | 1994-04-19 |
| 4769776 | Apparatus for measuring the concentration of filamentous microorganisms in a mixture including microorganisms | Masakatsu Hiraoka, Kenji Baba, Shoji Watanabe, Mikio Yoda, Naoki Hara | 1988-09-06 |
| 4564444 | Filamentous microorganism detector and an apparatus with the detector for controlling the process using microorganisms | Masakatsu Hiraoka, Kenji Baba, Shunsuke Nogita, Shunji Mori | 1986-01-14 |