US PATENT SUBCLASS 502 / 231
.~.~ And Group III metal (i.e., Sc, Y, Al, Ga, In or Tl)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


502 /   HD   CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING

100  DF  CATALYST OR PRECURSOR THEREFOR {12}
224  DF  .~ Halogen or compound containing same {6}
231.~.~ And Group III metal (i.e., Sc, Y, Al, Ga, In or Tl)

DEFINITION

Classification: 502/231

And Group III metal (i.e., Sc, Y, Al, Ga, In or Te):

(under subclass 224) Composition including a metal of Group III as listed at the beginning of the schedule, free or chemically combined.

(1) Note. Metal silicates are classified as a mixture of silicon dioxide and a metal oxide. Illustration: magnesium silicate is classified as SiO2 and MgO and will be found in subclass 251.

SEE OR SEARCH THIS CLASS, SUBCLASS:

60+, for a composition including a clay or zeolite.