(under subclass 500) Subject matter wherein an olefin is
produced from a feedstock molecule which contains another element in addition to carbon and hydrogen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
357, 469, 603+, and 733, for the production in general, from nonhydrocarbon feedstocks, of alicyclic, aromatic, diolefin, and paraffin products, respectively.
930+, for collections of patents which include the production of a nonhydrocarbon intermediate.
