US Patent 8211951 - High selectivity nanoporous particle membrane

http://www.freepatentsonline.com/8211951.html

This patent is from the University of Texas and teaches an optimized nanoscale gas filter combining the effectiveness of a continuous zeolite sheet with the flexibility and durability of a mixed matrix membrane. Claim 1 reads:

1. A membrane comprising:

at least one nano-porous particle;

a microporous polymer matrix; and

at least one microporous path in the microporous polymer matrix reaching across the membrane, wherein the microporous path is blocked by the nano-porous particle.