Electroconductive article and production thereof

Claim 1

A METHOD OF PROVIDING A SUBSTANTIALLY HAZEFREE GLASS BASE HAVING A TRANSPARENT ELECTROCONDUCTIVE COATING THEREON, WHICH COMPRISES HEATING A GLASS HAVING THE COMPOSITION: ALKALI METAL OXIDE OF THE GROUP CONSISTING OF NA2O ALKALINE EARTH METAL OXIDE OF THE GROUP CONSISTING OF TO A TEMPERATURE OF ABOVE ABOUT 400* F. BUT BELOW A TEMPERATURE AT WHICH THE GLASS MELTS, CONTACTING THE HOT GLASS WITH A FILM-FORMING DECOMPOSABLE SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF SILVER, ALUMINUM, ANTIMONY, COPPER, IRON, COBALT, NICKEL, THALLIUM AND ZINC WHEREBY TO DEPOSIT A TRANSPARENT COATING OF AN OXIDE OF A METAL OF SAID GROUP UPON A SURFACE OF THE GLASS, HEATING THE GLASS TO A TEMPERATURE ABOVE ABOUT 400* F. BUT BELOW THE TEMPERATURE AT WHICH THE GLASS MELTS, AND CONTACTING THE HOT GLASS WITH A DECOMPOSABLE FILM-FORMING COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF INDIUM, CADMIUM AND TIN WHEREBY TO DEPOSIT A TRANSPARENT ELECTROCONDUCTIVE COATING OF AN OXIDE OF A METAL OF SAID LAST NAMED GROUP UPON A TREATED SURFACE OF THE GLASS.