Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9962975 | Printer, and detection method for a detection area on a sheet | — | 2018-05-08 |
| 8163179 | Apparatus for removing dissolved hydrogen sulfide in anaerobic treatment | Yasuhiko Nagamori, Nobuyuki Ashikaga, Hiroshi Tamura, Toshiharu Ishihara, Takayuki Ishige +1 more | 2012-04-24 |
| 7972502 | Aeration-less water treatment apparatus | Masahiko Tsutsumi, Nobuyuki Ashikaga, Katsuya Yamamoto, Hiroshi Tamura | 2011-07-05 |
| 7704385 | Water treatment system | Masahiko Tsutsumi, Nobuyuki Ashikaga, Yasuhiko Nagamori, Takashi Menju, Katsuya Yamamoto | 2010-04-27 |