Materials or ingredients specially designed for use in producing opacity in glass, usually in the form of vitreous enamels or glazes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
48, and 49, for enamels or glazes including an opacifier, and subclasses 299 and 300, for titanium or zirconium containing pigments or fillers.
SEE OR SEARCH CLASS
520, Synthetic Resins or Natural Rubbers, appropriate subclasses, particularly Class 523,
170, for a composition containing a synthetic resin or natural rubber, having utility as an enamel for a glass substrate or as a medium or binder in the preparation of glass enamel or to processes of preparing said composition.
