Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael E. Kennedy0
Donald L. Hollenbaugh, Jr.0
Date of Patent
April 21, 2009
Patent Application Number
11935769
Date Filed
November 6, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A novel densified fluoropolymer article is described which has a water vapor permeation of about 0.015 g-mm/m2/day or less, and preferably has a matrix tensile strength of at least 10,000 psi in two orthogonal directions. The articles are made by compressing expanded porous PTFE at pressures, temperatures and times which result in elimination of the pores, and subsequent stretching above the crystalline melt temperature.
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