8, 2001May 30, 2002Lingle Philip J.Infrared reflecting layer contacting and sandwiched between a first layer and a second layer comprising NiCrOx, that is oxidation graded so that portions close to said reflecting layer are less oxidized that those farther awayUS20020192474May 20, 2002Dec 19, 2002Guardian Industries CorporationAt least 10 layers, including from the substrate outwardly, tin oxide,