Heat treatable coated article with dual layer overcoat

Details Heat treatable coated article with dual layer overcoat Heat treatable coated article with dual layer overcoat

2006-12-26

2006-12-26

Zimmerman, John J. (Department: 1775)

Stock material or miscellaneous articles

Composite

Of quartz or glass

C428S432000, C428S448000, C428S450000, C428S469000, C428S698000, C428S701000, C428S702000

Reexamination Certificate

active

07153577

ABSTRACT:
A coated article is provided so as to include an overcoat having an outermost layer including silicon nitride which overlies an underlayer including a metal oxide (MOx) or a metal oxynitride (MOxNy), where the metal (M) is selected from the group of Cr, Nb, Hf, Ta, and/or combinations thereof. Such an overcoat provides for good mechanical and chemical protection in the context of heat treatable coated articles. Coated articles herein may be used in the context of insulating glass (IG) window units, architectural or residential monolithic window units, vehicle windows, and/or the like.

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International Search Report mailed May 17, 2005.

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