US PATENT SUBCLASS 525 / 388
.~.~.~.~ Specified oxygen-containing compound is air, elemental oxygen, or ozone


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}
383  DF  .~.~.~ Chemical treating agent contains elemental oxygen or oxygen-containing compound {5}
388.~.~.~.~ Specified oxygen-containing compound is air, elemental oxygen, or ozone


DEFINITION

Classification: 525/388

Specified oxygen-containing compound is air, elemental oxygen, or ozone:

(under subclass 383) Subject matter wherein the oxygen-containing compound is identified as air, as elemental oxygen, or as ozone.

(1) Note. This subclass includes only those processes wherein there is a desired and intentional contact between air and the polymer to be treated.