Disposable vacuum filtration funnel with integral prefilter

Details Disposable vacuum filtration funnel with integral prefilter Disposable vacuum filtration funnel with integral prefilter

2005-12-30

2010-02-16

Cecil, Terry K (Department: 1797)

Liquid purification or separation

Filter

With pump, gas pressure, or suction source

C277S918000, C210S477000, C210S467000, C210S482000, C210S479000

Reexamination Certificate

active

07661538

ABSTRACT:
A filtration funnel with integral prefilter usable for filtering fluids. The integral prefilter is disposed above the final filter which is sealed to the funnel. The prefilter may contain one or more layers of prefilter material, and is sealed to the funnel with one or more seal rings. The funnel may be used with either vacuum or pressure.

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