Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12129589 | Washing machine with holding tank for temporarily storing costly laundry additive | — | 2024-10-29 |
| 11879198 | System and method for varying ozone production based upon ozone demand | — | 2024-01-23 |
| 11359321 | System and method for varying ozone production based upon ozone demand | — | 2022-06-14 |
| 10676854 | Method and system for dispensing laundry chemistry based upon ozone concentration | — | 2020-06-09 |
| 9657423 | System for controlling supply of ozone to washing machine to maximize cumulative CT value | David A. Spofford | 2017-05-23 |
| 9273871 | Combined compact hot and ozonated cold water unit | Jeffrey Ewell Deal | 2016-03-01 |
| 8984914 | System for monitoring ozone and controlling supply of ozone to washing machine | David A. Spofford | 2015-03-24 |
| 8020232 | System for monitoring ozone and controlling supply of ozone to washing machine | David A. Spofford | 2011-09-20 |
| 7614260 | System for monitoring ozone and controlling supply of ozone to washing machine | David A. Spofford | 2009-11-10 |
| 7493782 | Washing machine, ozone dissolving apparatus and method of washing | — | 2009-02-24 |
| 6506309 | Ozone dissolving system for a reservoir | David A. Spofford | 2003-01-14 |