Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9359239 | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods | Wenjun Liu, George W. Smith | 2016-06-07 |
| 9359238 | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods | Wenjun Liu, Marc E. Roehl | 2016-06-07 |
| 8894856 | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods | Wenjun Liu, George W. Smith | 2014-11-25 |
| 8894857 | Methods and systems for treating wastewater | Wenjun Liu, Paul Gallagher | 2014-11-25 |
| 8894855 | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods | Wenjun Liu, George W. Smith, Joseph E. Zuback | 2014-11-25 |
| 8801931 | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods | Wenjun Liu, George W. Smith | 2014-08-12 |
| 8623213 | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods | Wenjun Liu, Joseph E. Zuback, George W. Smith | 2014-01-07 |
| 7850851 | Biological phosphorus removal | Fufang Zha | 2010-12-14 |
| 7722769 | Method for treating wastewater | Wenjun Liu | 2010-05-25 |
| 7718057 | Wastewater treatment system | Wenjun Liu | 2010-05-18 |
| 7718065 | Filtration method and apparatus | — | 2010-05-18 |
| 7655144 | Method for the treatment of wastewater | James E. Augustyn | 2010-02-02 |
| 7655142 | Dynamic control of membrane bioreactor system | Wenjun Liu, Fufang Zha, Matthew John Kuzma | 2010-02-02 |
| 7550076 | System for the treatment of wastewater | James E. Augustyn | 2009-06-23 |
| 7387723 | Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials | — | 2008-06-17 |
| 7329344 | Grease and scum removal in a filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials | Robert Elefritz | 2008-02-12 |
| 6841070 | Apparatus and method for cleaning membrane filtration modules | Fufang Zha | 2005-01-11 |
| 6821420 | Apparatus and method for cleaning membrane filtration modules | Fufang Zha | 2004-11-23 |
| 6641733 | Apparatus and method for cleaning membrane filtration modules | Fufang Zha | 2003-11-04 |
| 6524481 | Apparatus and method for cleaning membrane filtration modules | Fufang Zha | 2003-02-25 |
| 5258121 | Waste treatment with nitrate removal | John L. Irwin | 1993-11-02 |
| 4904387 | Waste treatment and water recycling toilet system | — | 1990-02-27 |
| 4338191 | Apparatus for treating fluids | — | 1982-07-06 |
| 4211655 | Upflow filter construction | — | 1980-07-08 |