Foster-miller, Inc.

Thomas H E Mendum

Elmer C Lupton

Leslie S Rubin

Harris Gold

Justyna B Teverovsky

R Edwin Hicks

The present invention provides variable pore size filters. The variable pore size filters of the present invention comprise a fabric matrix, having a set pore size, wherein the fabric matrix is coated with a gel that expands and shrinks in response to a trigger. When the gel is expanded, the pore size of the filter is small and filtering is accomplished. When the gel is shrunken, the pore size of the filter is large and cleaning of the filter by a backwash or forward flush of fluid is accomplished.

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Somerville, MA, United States of America

Thomas H E Mendum