US PATENT SUBCLASS 528 / 483
.~.~ Contacting with exteriorly produced specified gaseous agent other than drying, blanket, or carrier gas

Current as of: June, 1999
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528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
480  DF  .~ TREATING POLYMER CONTAINING MATERIAL OR TREATING A SOLID POLYMER OR A RESINIFIABLE INTERMEDIATE CONDENSATION PRODUCT {14}
483.~.~ Contacting with exteriorly produced specified gaseous agent other than drying, blanket, or carrier gas

DEFINITION

Classification: 528/483

(under subclass 480) Processes which involve contacting the polymer-containing material with a gaseous material which material is other than a carrier, blanket, or drying gas.

(1) Note. "Gas" for purposes herein includes vapor, mist, or smoke.

(2) Note. Excluded from this subclass is the production of a gas by an "in situ" reaction wherein the production of the gas is effected by treatment in the presence of the polymer.

(3) Note. Air, carbon dioxide, steam, N2, and the inert gases are generally the type of gases to be excluded from this subclass by the use of the terms "carrier, blanket, or drying gas." Absent any disclosure to the contrary "gas" will be taken to mean one of these gaseous materials utilized as enumerated above and will be excluded herefrom.

(4) Note. Materials which are bifunctional and which have both a carrier, blanket or drying effect and also exhibit another effect such as a reactant, or as an extracting medium, are proper for this subclass.