US Patent 7999027 - Graphene-modified tires

http://www.freepatentsonline.com/7999027.html

This patent from Nanotek Instruments teaches how nanoscale graphene platelets can be used to extend the lifetime of rubber tires. Claim 1 reads:

1. A tire comprising a rubber composite, comprising at least one rubber or elastomer matrix with a first thermal conductivity and an effective amount of pristine nano graphene platelets dispersed in said matrix to make said rubber matrix composite thermally conducting, having a thermal conductivity greater than said first thermal conductivity of the matrix.