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:
Jun. 05, 1990
Filed:
Nov. 07, 1988
Applicant:
Inventor:
Noredin H Morgan, Billerica, MA (US);
Assignee:
Chomerics, Inc., Woburn, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521 76 ; 252512 ; 252514 ; 521 99 ;
Abstract
An electrically conductive elastomeric foam for use in EMI/RFI shielding applications, especially as a gap filler or caulk. The foam is based upon a polyurethane system wherein the electrically conductive filler is intermixed with either the isocyanate or active hydrogen containing component before reacting the two components to create the foam. The foam is lightweight, flexible, highly conductive, capable of withstanding cyclical vibration and is capable of adhering to various conductive surfaces such as metal, composites and glass. The foam is preferably room temperature curable and consists of a water activable prepolymer or quasi prepolymer system.