US PATENT SUBCLASS 525 / 368
.~.~.~.~.~.~ Metal oxide


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525 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
55  DF  .~.~ At least one solid polymer derived from ethylenic reactants only {25}
360  DF  .~.~.~ Chemical treating agent contains elemental metal or metal-containing compound {3}
366  DF  .~.~.~.~ Contains Group IA (Li, Na, K, Rb, Cs, Fr) or Group IIA (Be, Mg, Ca, Sr, Ba, Ra) elemental metal or compound thereof {1}
367  DF  .~.~.~.~.~ Elemental metal or inorganic metal compound {2}
368.~.~.~.~.~.~ Metal oxide


DEFINITION

Classification: 525/368

Metal oxide:

(under subclass 367) Subject matter containing a metal oxide.

(1) Note. Oxides for this subclass are binary compounds consisting of only a metal atom and oxygen.

SEE OR SEARCH THIS CLASS, SUBCLASS:

361+, for an oxide containing two diverse metal atoms.