US PATENT SUBCLASS 502 / 27
.~.~ Using acid

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}
27.~.~ Using acid {1}
28  DF  .~.~.~> Organic

DEFINITION

Classification: 502/27

Using acid:

(under subclass 22) Process in which a proton donor is utilized.

SEE OR SEARCH THIS CLASS, SUBCLASS:

35, for a process using a halogen acid in the gaseous state.