US Patent 7378020 Fluoropolymer membrane

Patent 7378020 was granted and assigned to Pall (funeral) on May, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Pall (funeral)

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7378020

Date of Patent

May 27, 2008

Patent Application Number

10524664

Date Filed

July 23, 2003

Patent Citations Received

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US Patent 12059644 Filter structure with enhanced dirt holding capacity

Patent Primary Examiner

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Ana Fortuna

Patent abstract

A porous fluoropolymer membrane comprising a first surface, a second surface, nodes and free fibrils, wherein one of the first and second surfaces has a greater number of free fibrils per unit area of the surface than the other of the first and second surfaces, is disclosed. A process for preparing porous fluoropolymer membranes is also disclosed, comprising splitting a thicker membrane in a dimension different from, e.g., perpendicular to, its thickness dimension.