Patent ID: 7670641

Claim:
A method of producing coated substrates, the method comprising: a) providing a pane having generally-opposed first and second major surfaces; and b) depositing upon one of said major surfaces a low-emissivity coating comprising, in sequence outwardly from the pane, an inner coat comprising at least one transparent dielectric film, an infrared-reflective layer, a high absorption primary layer, and a middle coat, said infrared-reflective layer comprising material that is highly reflective of infrared radiation, the high absorption primary layer comprising material that is highly absorptive of solar radiation and having a thickness of at least about 100 Å, the middle coat comprising at least one transparent dielectric film, having an optical thickness of between about 600 Å and about 872 Å and being positioned between said infrared-reflective layer and the high absorption primary layer.