Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 8623318 | Manufacture of high-strength, low-salt aqueous sodium hypochlorite bleach and substantially dry crystalline salt | Duane Powell, Brent J. Hardman | 2014-01-07 | $4,871,000 |
| 8491864 | Manufacture of high-strength, low-salt sodium hypochlorite bleach | Duane Powell, Brent J. Hardman | 2013-07-23 | $4,257,000 |
| 7175824 | Manufacture of high-strength, low-salt sodium hypochlorite bleach | Duane Powell, Brent J. Hardman | 2007-02-13 | |
| 6170801 | Valve closure system | Duane Powell | 2001-01-09 |