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. 08, 2014
Filed:
Sep. 23, 2010
Applicants:
Donald C. Grant, Grand Marais, MN (US);
Uwe Beuscher, Landenberg, PA (US);
Scott Ross, Chestertown, MD (US);
Inventors:
Donald C. Grant, Grand Marais, MN (US);
Uwe Beuscher, Landenberg, PA (US);
Scott Ross, Chestertown, MD (US);
Assignee:
W. L. Gore & Associates, Inc., Newark, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 15/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved method of testing the integrity of a porous filter is provided. The test method is an improvement over a gas-liquid diffusion test wherein the improvement comprises providing a conduit downstream of the filter and filling the conduit with a liquid, the conduit having a length to cross sectional area ratio selected to substantially resist diffusive flow of the gas through the liquid downstream of the filter material.