Appeal 2007-3048
Application 10/355,018
I. APPEALED SUBJECT MATTER
The subject matter on appeal is directed to multilayer coatings for
reducing the infrared emissivity from a substrate with minimal reduction in
visible transmittance (Specification 1-2). Details of the appealed subject
matter are recited in representative claims 1, 17, and 22, which are
reproduced below:
1. A low-emissivity coating on a substrate, the coating
comprising, in numerical order outward from the substrate,
a first layer including at least one layer selected from titanium oxide
layers and silicon nitride layers;
a second layer including Ag;
a third layer including at least one layer selected from titanium oxide
layers and silicon nitride layers;
a fourth layer including Ag; and
a fifth layer including silicon nitride, wherein
at least one of the second layer and the fourth layer comprises
a sublayer including Ag, and
a sublayer including a fully oxidized Ni-Cr alloy directly on,
and outward from the substrate from, the sublayer including Ag.
17. A low-emissivity coating on a substrate, the coating
comprising, in numerical order outward from the substrate,
a first layer including at least one layer selected from titanium oxide
layers and silicon nitride layers;
a second layer including a first means for reflecting infrared radiation;
a third layer having an index of refraction greater than or equal to 1.9
at a wavelength of 550 nm;
a fourth layer including a second means for reflecting infrared
radiation; and
a fifth layer including a means for protecting the coating from
abrasion, wherein
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Last modified: September 9, 2013