Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9878290 | Submerged membrane separator and membrane cartridge | Yoshio Matsuzaki, Kimihiro Ishikawa, Tomohiko Sasaki | 2018-01-30 |
| 8821726 | Submerged membrane separator | Yoshio Matsuzaki, Tomohiko Sasaki, Kimihiro Ishikawa | 2014-09-02 |
| 8647507 | Membrane cartridge | Yoshio Matsuzaki, Tomohiko Sasaki, Kimihiro Ishikawa | 2014-02-11 |
| 7931802 | Water treatment system | Kazuhisa Nishimori, Kiyoshi Izumi, Taichi Uesaka, Hidetoshi Masutani, Shigeto Miuma | 2011-04-26 |
| 6843470 | Air diffuser and flushing method thereof | Yasunobu Okajima, Masaaki Nagano, Kiyoshi Izumi | 2005-01-18 |
| 6843908 | Multistage immersion type membrane separator and high-concentration wastewater treatment facility using same | Yasunobu Okajima, Masaaki Nagano, Kiyoshi Izumi, Yutaka Yamada, Taichi Uesaka | 2005-01-18 |
| 6287467 | Submerged membrane cartridge | Masaaki Nagano, Yasunobu Okajima, Yutaka Yamada, Kiyoshi Izumi | 2001-09-11 |