US Patent 7645327 - Fractal structured nanofilter

http://www.freepatentsonline.com/7645327.html

This patent is from the New Jersey Institute of Technology and teaches a way to use nanoparticles to create an improved high-efficiency particulate air filter. Claim 1 reads:

1. A filter system comprising:

a filter media that includes agglomerates or granules of nanoparticles in an amount sufficient to effect a desired level of filtration, wherein the agglomerates or granules of nanoparticles define a hierarchical fractal structure such that a plurality of agglomerates or granules of nanoparticles are bonded together to form at least one higher order agglomerate or granule.