US PATENT SUBCLASS 585 / 837
.~.~.~ One agent is a diluent, i.e., nonselective solvent or heat exchange material

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}
836  DF  .~.~ Different, sequentially used agents {3}
837.~.~.~ One agent is a diluent, i.e., nonselective solvent or heat exchange material

DEFINITION

Classification: 585/837

One agent is a diluent, i.e., nonselective solvent or heat exchange material:

(under subclass 836) Subject matter in which one of the agents serves to heat or cool a material involved in the process or in which the agent dissolves an entire hydrocarbon feedstream.