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. 01, 2003
Filed:
Sep. 12, 2000
Applicant:
Inventors:
Kurt F. von Fay, Littleton, CO (US);
William F. Kepler, Golden, CO (US);
Alice I. Comer, Littleton, CO (US);
Assignee:
The United States of America as represented by the Secretary of the Interior, Washington, DC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 3/06 ; F16L 5/518 ;
U.S. Cl.
CPC ...
B32B 3/06 ; F16L 5/518 ;
Abstract
A material provided for sealing leaks in water conveyance systems includes a porous hydrophilic rubber impregnated with a water reactive polyurethane resin. When the material comes into contact with water, the rubber and polyurethane swell and this results in increased adhesion and improved sealing.