US PATENT SUBCLASS 502 / 235
.~.~.~.~ Group III or rare earth metal, metal oxide, or metal hydroxide containing (i.e., Sc, Y, Al, Ga, In, Tl or lanthanide)

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

100  DF  CATALYST OR PRECURSOR THEREFOR {12}
232  DF  .~ Silicon containing or process of making {2}
233  DF  .~.~ Forming silica gel {2}
234  DF  .~.~.~ Coprecipitating {2}
235.~.~.~.~ Group III or rare earth metal, metal oxide, or metal hydroxide containing (i.e., Sc, Y, Al, Ga, In, Tl or lanthanide)

DEFINITION

Classification: 502/235

Group III or rare earth metal, metal oxide, or metal hydroxide containing (i.e., Sc, Y, Al, Ga, In, Tl or lanthanide):

(under subclass 234) Process which includes the precipitation of a Group III or Rare Earth Metal, Metal Oxide or Hydroxide simultaneously with the precipitation of the silica gel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

263, for a catalyst which is a mixture of silica gel and a group III metal, oxide or hydroxide.