Shower filter for chlorine removal and scale deposit prevention

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6267887
SERIAL NO

09489762

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Embodiments of a multi-purpose, replaceable shower/tub filter cartridges are shown and described, the filter cartridges including a carbon block for chlorine removal and a scale-inhibitor media contained in a space inside the carbon block. The filter cartridges are adapted for use in shower/tub filter units. One embodiment of a filter cartridge of this invention is asymmetrical and bi-directional filter cartridge having aperatured end caps on each end of the filter cartridge, such that it can be inserted into the filter housing with either end in an upward orientation to make installation trouble-free. In an alternative embodiment, the filter cartridge is unidirectional and has a closed end and an aperatured end. The closed end of the unidirectional filter cartridge may be a closed end cap, or may be achieved by fabricating the carbon block to have a closed end and an open end. The unidirectional filter cartridge in inserted in the filter unit with open end near the outlet port of the filter unit. The unidirectional filter cartridge is designed to ensure that the filter cartridge will be inserted correctly by the user.

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Patent Owner(s)

Patent OwnerAddress
3M INNOVATIVE PROPERTIES COMPANYP O BOX 33427 ST PAUL MN 55133-3427

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Buhler, Rich E 2193 Sandollar Cir., Longmont, CO 80503 1 23
Hughes, Douglass E 3457 Iris Ct., Boulder, CO 80303 14 683

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