| abstract |
An electrically conductive transparent article comprises a transparent base coated with a first layer of metallic compound, a film of electrically conductive material, a second layer of metallic compound, a third layer of metallic compound, and a final protective layer of a siliceous compound. The third layer comprises a metallic compound which is different from that of the second layer and serves to isolate the first and second layers of metallic compound and the film of electrically conductive material from the surface coating of siliceous compound. Preferably the article has a glass base to which is applied in succession, a layer of bismuth oxide, a film of gold, a layer of bismuth oxide, a layer of copper oxide, and a final surface layer of silica. |