| 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 |