US PATENT SUBCLASS 502 / 54
.~.~ Ammonia or derivative thereof

Current as of: June, 1999
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502 /   HD   CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING

20  DF  REGENERATING OR REHABILITATING CATALYST OR SORBENT {4}
34  DF  .~ Gas or vapor treating {5}
54.~.~ Ammonia or derivative thereof

DEFINITION

Classification: 502/54

Ammonia or derivative thereof:

(under subclass 34) Process in which the treating fluid comprises the compound of nitrogen and three atoms of hydrogen or its substituted or additive forms including ammonium salts, amines and salts thereof, amides, and quaternary compounds.