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.

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

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

Additional USA Patents

Additional Foreign Patents

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©1989-2019 KX Technologies LLC, a Marmon Group/Berkshire Hathaway Company

KX Technologies LLC

55 Railroad Avenue

West Haven, CT 06516 USA

Tel: +1-203-799-9000

KX Technologies Pte Ltd.

201 Tuas South Avenue 2

Singapore, 637225

Tel: +65-6499-7659