US PATENT SUBCLASS 502 / 83
.~.~.~ Sulfuric or hydrochloric acid

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

60  DF  ZEOLITE OR CLAY, INCLUDING GALLIUM ANALOGS {13}
80  DF  .~ Clay {2}
81  DF  .~.~ Acid treating {2}
83.~.~.~ Sulfuric or hydrochloric acid

DEFINITION

Classification: 502/83

Sulfuric or hydrochloric acid:

(under subclass 81) Process in which the treatment is effected by either hydrochloric or sulfuric acid.