Patent ID: 8686319

Claim:
A heatable vehicle transparency, comprising: a substrate; an undivided electrically conductive solar control coating formed over at least a portion of the substrate, wherein the coating has a sheet resistance in the range of 0.6 to 1.7 ohms per square, and wherein the coating comprises: a first dielectric layer comprising at least one of a zinc stannate layer and a zinc oxide layer; a first reflective layer over the first dielectric layer and comprising metallic silver; a second dielectric layer over the first reflective layer comprising at least one of a zinc stannate layer and a zinc oxide layer; and a second reflective layer over the second dielectric layer and comprising metallic silver; a transformer connected to the conductive coating; an alternating current power supply connected with the conductive coating via the transformer, wherein the alternating current power supply comprises at least one coil of a vehicle alternator such that alternating current from the vehicle alternator is supplied to the conductive coating, such that said electrically conductive coating is powered by alternating current; and a second substrate connected to the first substrate by a polymeric layer.