US PATENT SUBCLASS 502 / 303
.~.~.~ Lanthanum


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}
300  DF  .~ Metal, metal oxide or metal hydroxide {10}
302  DF  .~.~ Of lanthanide series (i.e., atomic number 57 to 71 inclusive) {2}
303.~.~.~ Lanthanum


DEFINITION

Classification: 502/303

Lanthanum:

(under subclass 302) Composition in which the lanthanide is the first of the series - element number 57.