PATENTS

KX Technologies maintains a very large patent portfolio, covering carbon media technologies used in the drinking water industry, as well as multiple other patents related to filtration or filter devices. This page contains a listing of our patents and the products to which they relate, when applicable.

Electrolux/Frigidaire/Kenmore Refrigerator Filters

Frigidaire filters WF2CB, 860627 / Electrolux EWF2CBPA, EWF01 / Viking RWFVRF / Kenmore 46-9911, 469911, 9911, 9916

US Pat. No. 5,922,803 – RE37,216 – 6,395,190 – D656,578 S – D656,579 S – D656,580 S – 9,061,225

Frigidaire ULTRAWF, 1000472026, WF3CB / Kenmore 9999
US Pat. No. 5,922,803 – 6,395,190 – 8,137,551 – 8,366,930 – 8,673,146 – 9,233,322 – 10,857,492 – 9,901,852 – 10,675,571

Sub-Zero Refrigerator Filter Part No. 7023819

US Pat. 6,395,190 – 6,770,204 – 6,866,704 – 7,238,403 – 7,241,388 – 7,287,650 – 7,442,301