(under subclass 635) Subject matter, wherein there is at least one layer of glass in the multiple insulating layers on the semiconductor body.
(1) Note. For purposes of the definitions of this class, a material is considered to be a glass if it is amorphous (i.e., non-crystalline) and its major constituents are a mixture of oxides of more than one element. An oxide of a single element, such as silicon dioxide, is not regarded as a glass layer, while a mixture of phosphorus oxide and silicon dioxide (phosphosilicate glass) would be regarded as a glass.
