Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10513452 | Water treatment system | Yuta Hashimoto, Hideo Iwahashi, Katsunori Matsui, Kiichi Tokunaga, Takeshi Yasunaga +4 more | 2019-12-24 |
| 10308525 | Suspended-matter removing method utilizing biofilm and suspended-matter removing apparatus utilizing biofilm | Seiji Furukawa, Katsunori Matsui, Hideo Suzuki, Gaku Kondo, Shigeru Yoshioka +1 more | 2019-06-04 |
| 10207942 | Seawater pretreatment device | Yoshiaki Ito, Katsunori Matsui, Kiichi Tokunaga, Hideo Iwahashi | 2019-02-19 |
| 10159936 | Reverse osmosis membrane filtering device | Hidemasa Kakigami, Yoshiaki Ito, Katsunori Matsui, Kiichi Tokunaga | 2018-12-25 |
| 7687732 | Key switch exhibiting low noise operation | — | 2010-03-30 |