US Patent 7977423 - CNT reinforced polymer

http://www.freepatentsonline.com/7977423.html

This patent has priority going back to 2003 and appears to include some basic claims for CNT enhanced polymers. Claim 1 reads:

1. Carbon nanotube reinforced polymer comprising a polymer and carbon nanotubes reinforcing the polymer, the carbon nanotube reinforced polymer having a conductivity percolation threshold of less than 1000000 Ω/cm at a carbon nanotube content of 1.5 wt. % and less, wherein the polymer is selected from a polyamide or a polystyrene based polymer.