Patent ID: 11885174
Assignee: VITRO FLAT GLASS LLC
Field: Materials, metallurgy (Chemistry)
Classification: CPC E  C  G | IPC B  C  E  G

Claim 19:
20. A method of making a coated article comprising the steps of:
providing a substrate;
applying a first dielectric layer comprising zinc and having a thickness in the range of 353 Å to 446 Å over at least a portion of the substrate;
applying a first metallic layer comprising silver and having a thickness in the range of 75 Å to 200 Å over at least a portion of the first dielectric layer;
applying a first primer layer having a thickness in the range of 25 Å to 36 Å over at least a portion of the first metallic layer;
applying a second dielectric layer comprising zinc and having a thickness in the range of 350 Å to 775 Å over at least a portion of the first primer layer;
applying a second metallic layer over at least a portion of the second dielectric layer;
applying a second primer layer having a thickness in the range of 20 Å to 36 Å over at least a portion of the second metallic layer;
applying a third dielectric layer comprising zinc and having a thickness in the range of 260 Å to 425 Å over at least a portion of the second primer layer;
applying a third metallic layer comprising silver and having a thickness in the range of 70 Å to 250 Å over at least a portion of the third dielectric layer;
applying a third primer layer having a thickness in the range of 25 Å to 36 Å over at least a portion of the third metallic layer;
applying a fourth dielectric layer comprising zinc and having a thickness in the range of 350 Å to 785 Å over at least a portion of the third primer layer;
applying a fourth metallic layer comprising silver and having a thickness in the range of 80 Å to 240 Å over at least a portion of the fourth dielectric layer;
applying a fourth primer layer having a thickness in the range of 25 Å to 36 Å over at least a portion of the fourth metallic layer;
applying a fifth dielectric layer comprising zinc and having a thickness in the range of 125 Å to 340 Å over at least a portion of the fourth primer layer; and
applying an overcoat comprising titanium and having a thickness in the range of 25 Å to 75 Å over at least a portion of the fifth dielectric layer,
wherein the second metallic layer is a discontinuous layer comprising silver and having a thickness in the range of 12 Å to 22 Å,
wherein the first metallic layer, the second metallic layer, and the fourth metallic layer are continuous metallic layers;
wherein the total thickness of all of the continuous metallic layers is within the range of 225 Å to 650 Å;
wherein the article comprises a solar heat gain coefficient (“SHGC”) of less than 0.20; and
wherein the article comprises a visible light transmittance (“LTA”) of between 34% and 45%.