US PATENT SUBCLASS 264 / 237
.~.~ Cooling

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

232  DF  DISPARATE TREATMENT OF ARTICLE SUBSEQUENT TO WORKING, MOLDING, OR SHAPING {2}
234  DF  .~ Effecting temperature change {3}
237.~.~ Cooling

DEFINITION

Classification: 264/237

(under subclass 234) Processes wherein a positive cooling or refrigerating step is applied to the material.

(1) Note. Normal cooling of a heated material to ambient temperature is not sufficient to place a patent in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

28, for processes including a cooling or freezing step of 0 deg.C or below.

348, for cooling, per se, of a shaped or solid article.