Pall Corporation

Thomas M Sorensen

Martin Zeiler

James A Bair

John P Miller

Support and drainage materials, each comprising an element comprising a section having a first end and a second end, and a first major surface, and a plurality of parallel tapered flow channels extending from the first end to the second end, the tapered flow channels comprising tapered side walls arranged in parallel and projecting upwardly from, and perpendicular to, the first major surface, the tapered flow channels having a deeper end and a shallower end, and being deeper at the first end of the section than at the second end of the section, wherein the tapered flow channels are connected at the first end with a cross member, and connected at the second end with a cross member, filters including the materials, and methods of use are disclosed.

Support and drainage material, filter, and method of use

Support and drainage materials, filter including the materials, and methods of use are disclosed.

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Freeville, NY, United States of America

Thomas M Sorensen