Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2007-11-27
2007-11-27
Moore, Margaret G. (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S555000, C524S558000, C526S286000, C526S304000, C526S323100, C166S270000, C166S275000, C166S295000, C507S224000, C507S225000, C507S261000, C507S266000
Reexamination Certificate
active
10251006
ABSTRACT:
A composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent content of about 6,000 to less than about 9,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers, useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.
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Chang Kin-Tai
Frampton Harry
Morgan James C.
Breininger Thomas M.
Martin Michael B.
Moore Margaret G.
Nalco Company
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