# US 10,478,763 B2 · Water filter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,478,763 B2 - Document ID: US10478763B2 - Status: Granted - Kind: B2 - Application number: 15/463,438 - Filed: 2017-03-20 - Published: 2017-10-26 - Granted: 2019-11-19 - Earliest claimed: 2016-04-08 - Assignees: US Water Filters, Inc. - Applicants: US Water Filters, Inc. - Inventors: Mark David Nelson; Jamin Arvig - Web page: https://patentgrep.com/patent/US10478763B2 ## CPC - B01D 35/1435: {with alarm means} - C02F 1/283: {using coal, charred products, or inorganic mixtures containing them} - C02F 1/68: by addition of specified substances, e.g. trace elements, for ameliorating potable water (medicinal water A61K) - B01D 2201/56: Wireless systems for monitoring the filter - C02F 1/003: {using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices (C02F9/20 takes precedence)} - C02F 2201/006: Cartridges - C02F 2209/008: comprising telecommunication features, e.g. modems or antennas - C02F 2209/445: Filter life - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) ## Abstract A water filter having a housing having a water inlet and a water outlet on a first end, and a pair of replaceable carbon elements contained within the housing, each carbon element having a water inlet near an outside diameter and a water outlet near the center, both the water outlet and water inlet being on a first end of each carbon element and each of the carbon element inlets being in fluid communication with the housing water inlet and each of the carbon element outlets being in fluid communication with the housing water outlet. ## Claims ### Claim 1 A water filter comprising: a housing having a water inlet and a water outlet on a first end, and a pair of replaceable carbon elements contained within the housing, each carbon element having a water inlet near an outside diameter and a water outlet near a center, both the water outlet and water inlet of the pair of replaceable carbon elements being on a first end of each carbon element and each of the carbon element inlets being in fluid communication with the housing water inlet and each of the carbon element outlets being in fluid communication with the housing water outlet. ### Claim 2 (depends on 1) The water filter of claim 1 wherein the replaceable carbon elements are contained in a tray which slides into and out of the housing for ease of replacement. ### Claim 3 (depends on 2) The water filter of claim 2 wherein the carbon element further includes an additive section for holding and adding an additive to water which passes through the water filter. ### Claim 4 (depends on 3) The water filter of claim 3 wherein the additive is selected from a group consisting of vitamins, flavors, nutraceuticals and electrolytes. ### Claim 5 (depends on 1) The water filter of claim 1 further including a replacement timer carried by a second end of the housing. ### Claim 6 (depends on 5) The water filter of claim 5 wherein the replacement timer contains a timer circuit powered by a battery for measuring a predetermined period of time, and further includes an indicator to indicate when the predetermined period of time has elapsed. ### Claim 7 (depends on 6) The water filter of claim 6 wherein the indicator is selected from a group consisting of an LED light, a Bluetooth transmitter and a WIFI transmitter. ### Claim 8 (depends on 7) The water filter of claim 7 wherein the timer includes a reset button to reset the predetermined period of time. ### Claim 9 (depends on 5) The water filter of claim 5 further wherein the replacement timer measures a predetermined volume of water passing through the timer, and further includes an indicator to indicate when the predetermined period of time has elapsed. ### Claim 10 (depends on 9) The water filter of claim 9 wherein the indicator is selected from a group consisting of an LED light, a Bluetooth transmitter and a WIFI transmitter. ### Claim 11 (depends on 10) The water filter of claim 10 wherein the timer includes a reset button to reset the predetermined volume of water.