Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8475658 | Water purification device for arsenic removal | Richard Donald Witham, John L. Burba, III | 2013-07-02 |
| 7686976 | Composition for removing arsenic from aqueous streams | Richard Donald Witham, John L. Burba, III | 2010-03-30 |
| 7338603 | Process using rare earths to remove oxyanions from aqueous streams | Richard Donald Witham, John L. Burba, III | 2008-03-04 |
| 7300589 | Process for removing arsenic from aqueous streams | Richard Donald Witham, John L. Burba, III | 2007-11-27 |
| 7048853 | Process for removing arsenic from drinking water | Richard Donald Witham, John L. Burba, III | 2006-05-23 |
| 6863825 | Process for removing arsenic from aqueous streams | Richard Donald Witham, John L. Burba, III | 2005-03-08 |