Carbon fiber filters

Liquid purification or separation – Filter – Material

Reexamination Certificate

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Details

C210S503000, C210S505000, C428S315500, C428S315700, C442S334000, C442S414000

Reexamination Certificate

active

06852224

ABSTRACT:
Disclosed is a filter comprised of activated carbon fibers, wherein said filter has a Virus Removal Index (hereafter “VRI”) of at least about 99%, as measured in accordance with the test method described in the specification. The filter may comprise unbound fibers, or the fibers may be bound with a binder to form a composite of fibers. Also disclosed is a method of removing viruses from a liquid, the method comprising contacting the liquid with a filter comprising activated carbon fibers wherein said filter has a VRI of at least about 99%. Also described is an article of manufacture comprising: (a) a filter comprising activated carbon fibers, wherein said filter has a VRI of at least about 99%; and (b) instructions which inform a user that the filter may be used to remove viruses from a liquid.

REFERENCES:
patent: 5972253 (1999-10-01), Kimber
patent: 6030698 (2000-02-01), Burchell et al.
patent: 20030136728 (2003-07-01), Jagtoyen et al.

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