US PATENT SUBCLASS 525 / 344
.~.~.~.~ Inorganic sulfur compound contains sulfur atom bonded to at least two oxygen atoms

Current as of: June, 1999
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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}
343  DF  .~.~.~ Chemical treating agent contains a sulfur atom {8}
344.~.~.~.~ Inorganic sulfur compound contains sulfur atom bonded to at least two oxygen atoms

DEFINITION

Classification: 525/344

Inorganic sulfur compound contains sulfur atom bonded to at least two oxygen atoms:

(under subclass 343) Subject matter wherein the chemical treating is performed in the presence of an inorganic sulfur compound which contains at least one sulfur atom bonded to at least two oxygen atoms.