Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8083943 | Filtration device | Kohji Hattori, Hiroyuki Oyachi | 2011-12-27 |
| 7922904 | Upward-flow manganese contact column | Hideki Takeuchi, Hiroyuki Oyachi | 2011-04-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8083943 | Filtration device | Kohji Hattori, Hiroyuki Oyachi | 2011-12-27 |
| 7922904 | Upward-flow manganese contact column | Hideki Takeuchi, Hiroyuki Oyachi | 2011-04-12 |