US PATENT SUBCLASS 585 / 813
.~.~ Using specified holding time or specified cooling rate


Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

800  DF  PURIFICATION, SEPARATION, OR RECOVERY {7}
812  DF  .~ By cooling of liquid to obtain solid, e.g., crystallization, etc. {4}
813.~.~ Using specified holding time or specified cooling rate


DEFINITION

Classification: 585/813

Using specified holding time or specified cooling rate:

(under subclass 812) Subject matter wherein an amount of cooling is claimed as taking place during a claimed period of time or the amount of time during which the mixture or a component thereof is held at a certain temperature or within a certain temperature range is claimed.

(1) Note. The cooling rate may be specified as a constant such as 105/ hr or by a time dependent formula.