Glazing perimeter anticondensation coating technology

A multiple-pane insulating glass unit comprising at least two glass panes and having at least one between-pane space, the multiple pane insulating glass unit having two external surfaces and a plurality of internal surfaces, each of the internal surfaces being exposed to a between-pane space of the multiple-pane insulating glass unit, each of the two external surfaces being exposed to an environment external to the multiple-pane insulating glass unit, a desired one of the two external surfaces having a transparent electrically conductive coating so as to define a coated surface, the coated surface having a central region and a perimeter region, the transparent electrically conductive coating being present on both the central region and the perimeter region, the transparent electrically conductive coating having a higher electrical conductivity at the central region than it does at the perimeter region, such that the transparent electrically conductive coating has electrical conductivity at both the central region and the perimeter region but the electrical conductivity at the central region is higher than the electrical conductivity at the perimeter region, whereby the transparent electrically conductive coating is configured to mitigate condensation at the perimeter region.

A glazing comprising a frame and a multiple-pane insulating glass unit, the multiple-pane insulating glass unit being mounted to the frame, the multiple-pane insulating glass unit comprising an inboard glass pane and an outboard glass pane and having at least one between-pane space, the outboard glass pane defining an external surface that is exposed to periodic contact with rain, the inboard glass pane defining an external surface that is exposed to a room-side environment inside a building, the external surface of the inboard glass pane having a transparent electrically conductive coating so as to define a coated surface, the coated surface having a central region and a perimeter region, the transparent electrically conductive coating being present on both the central region and the perimeter region, the transparent electrically conductive coating having a higher electrical conductivity at the central region than it does at the perimeter region, such that the transparent electrically conductive coating has electrical conductivity at both the central region and the perimeter region but the electrical conductivity at the central region is higher than the electrical conductivity at the perimeter region, whereby the transparent electrically conductive coating is configured to mitigate condensation at the perimeter region.

A glass pane having a transparent electrically conductive coating on a surface of the glass pane, such that the glass pane has a coated surface, wherein the glass pane is tempered glass having a surface stress of greater than 10,000 psi, the coated surface having a central region and a perimeter region, the transparent electrically conductive coating being present on both the central region and the perimeter region, the transparent electrically conductive coating having a higher electrical conductivity at the central region than it does at the perimeter region, such that the transparent electrically conductive coating has electrical conductivity at both the central region and the perimeter region but the electrical conductivity at the central region is higher than the electrical conductivity at the perimeter region, whereby the transparent electrically conductive coating is configured to mitigate condensation at the perimeter region.