Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10689278 | System and method for controlled gas-dispersion-return-sludge-based wastewater treatment | Akiyoshi Ohki, Whitney Rich | 2020-06-23 |
| 10435319 | System and method for wastewater treatment using selective gas-dispersion return sludge delivery | Akiyoshi Ohki, Whitney Rich | 2019-10-08 |
| 10167214 | System and method for gas-dispersion-return-sludge-based wastewater treatment | Akiyoshi Ohki, Whitney Rich | 2019-01-01 |
| 7534351 | Pressurized biological waste water purification process | — | 2009-05-19 |
| 7105092 | Sewage treatment process by activated-sludge method comprising line atomizing treatment | — | 2006-09-12 |