US PATENT SUBCLASS 62 / 614
.~.~.~ Heat exchange with liquid cryogen

Current as of: June, 1999
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62 /   HD   REFRIGERATION

600  DF  CRYOGENIC TREATMENT OF GAS OR GAS MIXTURE {4}
606  DF  .~ Liquefaction {6}
611  DF  .~.~ Natural gas {3}
614.~.~.~ Heat exchange with liquid cryogen

DEFINITION

Classification: 62/614

Heat exchange with liquid cryogen:

(under subclass 611) Subject matter wherein the gas or gas mixture is directed into a heat exchange operation wherein it is liquified by condensation as a result of contact of the gas or gas mixture with an evaporating cryogen.