US Patent 7754336 - CNT glazing unit

http://www.freepatentsonline.com/7754336.html

Laminated glass assemblies used in building architecture are desirable to be transmissive to visible light but opaque to the infrared spectrum for providing thermal insulation. This patent from Cardinal CG Company teaches using nanotubes in the construction of such assemblies to reduce the weight. Claim 1 reads:

1. A multiple-pane insulating glazing unit including

at least two spaced-apart panes,

the insulating glazing unit having at least one between-pane space and having a desired surface on which there is provided a transparent conductor coating consisting essentially of carbon nanotubes and inorganic dielectric material,

the desired surface being an exterior surface of the unit rather than being an interior surface facing a between-pane space of the unit.