Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9506190 | Whitewater recovery process | Chris Spence | 2016-11-29 |
| 8986503 | Whitewater recovery process | Chris Spence | 2015-03-24 |
| 7270796 | Ammonium/ammonia removal from a stream | Mark M. Simon, Stephen Brown | 2007-09-18 |
| 6818129 | Ion exchange removal of metal ions from wastewater | James L. Filson, Stanley R. Kaars, Frank L. Sassaman | 2004-11-16 |
| 6346195 | Ion exchange removal of metal ions from wastewater | James L. Filson, Stanley R. Kaars, Frank L. Sassaman | 2002-02-12 |
| 6315906 | Removing metal ions from wastewater | Frank L. Sassaman, James L. Filson | 2001-11-13 |