Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10435313 | Systems, devices, and methods of water filtration | Doug Kellam, Liu Wei, Ajit Dighe, Charles Lieppe | 2019-10-08 |
| 10099942 | Systems and methods of eliminating filter air locks | Doug Kellam, Liu Wei | 2018-10-16 |
| 9994459 | Gravity-fed and dual ion-exchange water filtration bottle | Doug Kellam, Byron Stanger, Ajit Dighe, Charles Lieppe | 2018-06-12 |
| 9090483 | Water filtering and dispensing system and system for filtering, storing, delivering, and testing water | Mathu Rajan, Raja Rajan, Ken Williams | 2015-07-28 |
| 9067805 | Water filtering and dispensing system and system for filtering, storing, delivering, and testing water | Mathu Rajan, Raja Rajan, Ken Williams | 2015-06-30 |
| 8252185 | Water treatment apparatus and method | Mathu Rajan | 2012-08-28 |
| D620304 | Water filtering and dispensing system | Mathu Rajan, Raja Rajan, Ken Williams | 2010-07-27 |
| 7413663 | Water treatment apparatus and method | Mathu Rajan | 2008-08-19 |
| 6572769 | Water treatment apparatus | Mathu Rajan | 2003-06-03 |
| 5635063 | Water treatment apparatus | Mathu Rajan | 1997-06-03 |