US PATENT SUBCLASS 502 / 26
.~.~.~ 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}
22  DF  .~ Treating with a liquid or treating in a liquid phase, including dissolved or suspended {5}
25  DF  .~.~ Using salt or alkaline substance {1}
26.~.~.~ Ammonia or derivative thereof

DEFINITION

Classification: 502/26

Ammonia or derivative thereof:

(under subclass 25) Process in which the alkaline material or salt comprises NH3 or a derivative thereof e.g., amine, amide, or quaternary ammonium salt.