Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7476322 | Process and energy-efficient biological treatment system with filtration membrane | Joseph G. Krall, David Rice, Velupillai Yogendran, Roger J. Byrne, Kenneth P. George +1 more | 2009-01-13 |
| 7179370 | Energy-efficient biological treatment system with filtration membrane | Joseph G. Krall, David Rice, Velupillai Yogendran, Roger J. Byrne, Kenneth P. George +1 more | 2007-02-20 |
| 7118674 | Energy-efficient biological treatment with membrane filtration | Joseph G. Krall, David Rice, Velupillai Yogendran, Roger J. Byrne, Kenneth P. George +1 more | 2006-10-10 |
| 4431549 | Filter elements, apparatus and methods | Edward J. Highstreet, Forrest B. Stannard, Louis H. Piper | 1984-02-14 |