Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498105 | Drainage water pumping station and method for operating the same | Kunio Takada, Kenji Otani | 1996-03-12 |
| 5487621 | Large-depth underground drainage facility and method of running same | Kunio Takada, Kenji Otani, Masayuki Yamada, Saburo Maru, Sumio Sudo | 1996-01-30 |
| 5360289 | Drainage water pumping station and method for operating the same | Kunio Takada, Kenji Otani | 1994-11-01 |