US PATENT SUBCLASS 62 / 539
.~.~.~ With control of pulsed column process parameter

Current as of: June, 1999
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62 /   HD   REFRIGERATION

56  DF  PROCESSES {28}
532  DF  .~ Fractionally solidifying a constituent and separating the same {8}
538  DF  .~.~ Solidifying or purifying in a pulsed column or using sonic vibration {1}
539.~.~.~ With control of pulsed column process parameter

DEFINITION

Classification: 62/539

(under subclass 538) Processes wherein control of some process variable of the pulsed column is effected responsive to measurement of that or another process variable.

SEE OR SEARCH THIS CLASS, SUBCLASS:

540, for control of processes of refrigeration of a mixture or solution to solidify a constituent in the absence of pulsation.