US PATENT SUBCLASS 585 / 861-- .~.~.~ Ammonia

US PATENT SUBCLASS 585 / 861
.~.~.~ Ammonia

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}
860	DF	.~.~ N-containing {3}
861		.~.~.~ Ammonia

Classification: 585/861

Ammonia:

(under subclass 860) Subject matter wherein an agent is NH₃ or NH_{4[end subscrpt]OH.}