(under subclass 426) Product in which a layer Next to the quartz or glass contains a cellulosic* material.
(1) Note. The majority of patents claiming safety glass in which cellulosic material is an inner layer, or in which glass is bonded to an inner layer by cellulosic material, will be placed in this and the indented subclass.
(2) Note. Patents claiming significant polarizing structure or composition of a layer or laminate will be placed in Class 359, Optics: Systems (Including Communication) and Elements, subclasses 483+. Patents claiming significant optical filtering structure will be placed in Class 359, subclasses 885+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
34, for coextensive light-transmissive sheets* which are hermetically sealed at their edges and confine a gas therebetween.
38, for a laminated plural layer* sheet* including glass, but which has an opaque frame or border over at least a portion. SEE OR SEARCH CLASS
359, Optics: Systems (Including Communication) and Elements,
483+, for a laminated polarizer and subclasses 885+ for optical filters. See (2) Note above.
