US PATENT SUBCLASS 162 / 207
.~.~.~ Heating, cooling, gas or vapor contact

Current as of: June, 1999
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162 /   HD   PAPER MAKING AND FIBER LIBERATION

100  DF  PROCESSES AND PRODUCTS {31}
202  DF  .~ Running or indefinite length work forming and/or treating processes (e.g., web) {6}
204  DF  .~.~ Subsequent treatment of formed web {2}
207.~.~.~ Heating, cooling, gas or vapor contact

DEFINITION

Classification: 162/207

(under subclass 204) Processes in which the subsequent treatment is that of altering the temperature of the formed web and/or directing a treating gas or vapor into association with the web.

(1) Note. Mere delivery of the web into the ambient atmosphere is not considered to be gas or vapor contact for this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

224+, for processes for heating discrete articles.

290, for paper making apparatus including heat exchange means.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids, appropriate subclasses for drying, per se, of fibrous webs, and see especially 23, of that class for gas and vapor treatment of sheets, web or strands.