(under subclass 935) Made of a particular material wherein the composition or substance is a fired clay containing composition (e.g., porcelain, earthenware, etc.), glass or refractory composition (e.g., inorganic oxides, carbides, etc.).
SEE OR SEARCH CLASS
501, Compositions: Ceramic,
1+, for inorganic compositions other than Portland cement or cementitious material prepared from gypsum that are heat treated by firing, calcining, sintering, or fusion of a part of the inorganic material during manufacturing or subsequent use to effect hardening or fusion followed by hardening when cooled and processes not provided for elsewhere, and especially subclasses 11+ for a glass composition or a composition intended to be heat treated to form a glass.
