US PATENT SUBCLASS 53 / 440
.~.~ Heating or cooling


Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

396  DF  METHODS {22}
428  DF  .~ With contents treating {7}
440.~.~ Heating or cooling


DEFINITION

Classification: 53/440

Heating or cooling:

(under subclass 428) Methods for subjecting the contents material to a treatment which either raises or lowers its temperature.

(1) Note. Included here are methods which effect a subatmospheric pressure on the contents by subjecting contents and receptacle to temperature variations.

SEE OR SEARCH THIS CLASS, SUBCLASS:

127, for corresponding apparatus.

SEE OR SEARCH CLASS

62, Refrigeration,

60, for methods involving specific refrigerating steps combined with packaging.