Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael H. Johnson0
Gaurav Agrawal0
Soma Chakraborty0
Date of Patent
September 13, 2016
0Patent Application Number
133480900
Date Filed
January 11, 2012
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A downhole filter comprising includes an open cell foam; and nanoparticles disposed in the open cell foam and exposed within pores of the open cell foam. A method of preparing the downhole filter includes combining a polyisocyanate and polyol to form a polymer composition; introducing nanoparticles into the polymer composition; and foaming the polymer composition to produce the downhole filter comprising an open cell foam having nanoparticles exposed within pores of the open cell foam. The nanoparticles can be derivatized with functional groups.
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