US PATENT SUBCLASS 585 / 842
.~.~ HF and another fluoride

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

800  DF  PURIFICATION, SEPARATION, OR RECOVERY {7}
833  DF  .~ By addition of extraneous agent, e.g., solvent, etc. {15}
842.~.~ HF and another fluoride

DEFINITION

Classification: 585/842

HF and another fluoride:

(under subclass 833) Subject matter in which the agent contains hydrogen fluoride and another compound containing fluorine.

SEE OR SEARCH THIS CLASS, SUBCLASS:

702+, for a process of paraffin synthesis in which an HF catalyst is used also as a purifying or separating agent.