Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10793586 | Quaternary ammonium etidronates | Deqing Lei, Amber Khanzada | 2020-10-06 |
| 8007664 | Floating dispenser for dispensing a solid dissolvable chemical into ambient water | Christopher Reed, Melissa Renee Hickman, Jeffrey N. Smith, Jerry Vance Foster, III, Matthew Gabriel +4 more | 2011-08-30 |
| 7780857 | Solid composition for treating water | David F. Purdy, Michael J. Engram | 2010-08-24 |
| 7625496 | Solid composition for treating water | David F. Purdy, Michael J. Engram | 2009-12-01 |
| 7238290 | Catalytic oxidation of peroxy salts | David F. Purdy, Thomas M. Lachocki | 2007-07-03 |