Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8512460 | Carbon dioxide recovery system | Shinobu Moniwa, Nobuyuki Ashikaga, Hiroyuki Tokimoto, Satomi Ebihara, Masato Oda | 2013-08-20 |
| 8163179 | Apparatus for removing dissolved hydrogen sulfide in anaerobic treatment | Takumi Obara, Nobuyuki Ashikaga, Hiroshi Tamura, Toshiharu Ishihara, Takayuki Ishige +1 more | 2012-04-24 |
| 7704385 | Water treatment system | Masahiko Tsutsumi, Nobuyuki Ashikaga, Takumi Obara, Takashi Menju, Katsuya Yamamoto | 2010-04-27 |
| 6303027 | Apparatus for controlling quality of treated water | Akihiro NAGAIWA, Osamu Yamanaka, Masahiko Tsutsumi, Yukio Hatsushika, Masajiro Nakada +4 more | 2001-10-16 |