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:
Nov. 11, 2003
Filed:
Apr. 26, 2001
Applicant:
Inventor:
Alexander Botrie, Toronto, CA;
Assignee:
Chemque, Inc., , CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 9/00 ;
U.S. Cl.
CPC ...
H05K 9/00 ;
Abstract
An electrically conductive flexible polyurethane foam including a polyurethane and at least one conductive filler dispersed therein in an amount effective to provide EMI/RFI shielding, wherein the polyurethane comprises an isocyanate component to active hydrogen component in a ratio of at most about 0.20:1. Preferably, the foam has compression deflection value at 50% compression of at most about 25 psi, a foam density of at most 0.95 g/cm and/or noise shielding effectiveness at a frequency of about 20 to about 1000 MHz of at least about 10 dB.