US Patent 7449133 - Transparent graphene

http://www.freepatentsonline.com/7449133.html

There has been some development by companies such as Eikos and Unidym in using carbon nanotubes in new transparent electrodes. This patent from Unidym moves in a slightly different direction using the related carbon material graphene which may offer even superior transparency properties. Claim 1 reads:

1. A film comprising at least one interconnected network of functionalized graphene flakes and a polymer in electrical contact with the interconnected network of functionalized graphene flakes, wherein the film is optically transparent and electrically conductive, and wherein the film has an optical transparency of at least 80% for 550 nm light.