The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2009
Filed:
Nov. 06, 2007
Applicants:
Michael E. Kennedy, Landenberg, PA (US);
Donald L. Hollenbaugh, Jr., North East, MD (US);
Inventors:
Michael E. Kennedy, Landenberg, PA (US);
Donald L. Hollenbaugh, Jr., North East, MD (US);
Assignee:
Gore Enterprise Holdings, Inc., Newark, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 55/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A novel densified fluoropolymer article is described which has a water vapor permeation of about 0.015 g-mm/m/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.