(under subclass 345) Processes directed to the cooling, per se, of a preform or self-sustaining body by a positive application of a heat extracting temperature differential.
(1) Note. Mere cooling to ambient temperature in normal surroundings of a heated article is not included within the scope of this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
28, for processes including the step of cooling or freezing at 0 deg.C or below.
237, for a positive cooling step combined as a subsequent disparate treatment.
SEE OR SEARCH CLASS 62, Refrigeration, appropriate subclasses for specific processes of refrigerating.
