Patent ID: 7455910

Claim:
A coated article including a coating supported by a glass substrate, the coating comprising, from the glass substrate outwardly: a first dielectric layer comprising niobium oxide; a first contact layer comprising at least one of NiCr, an oxide of NiCr and a nitride of NiCr located over and contacting the first dielectric layer comprising niobium oxide; a first IR reflecting layer comprising Ag located over and contacting the first contact layer; a second dielectric layer comprising niobium oxide; a third dielectric layer having an index of refraction n less than an index of refraction of at least one of the first and second dielectric layers; a second contact layer comprising at least one of NiCr, an oxide of NiCr and a nitride of NiCr; a second IR reflecting layer comprising Ag; a fourth dielectric layer comprising silicon oxide; and wherein the coated article has a visible transmission of at least 70% and a sheet resistance (R s ) of no greater than 10 ohms/square.