US PATENT SUBCLASS 502 / 301
.~.~ Raney type


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}
301.~.~ Raney type


DEFINITION

Classification: 502/301

Raney type:

(under subclass 300) Composition prepared by removing a metal from an alloy, leaving the remaining metal behind as the catalyst.

(1) Note. The remaining catalytic metal is generally in a highly active porous or finely divided state.

(2) Note. The metal may be removed by any method, e.g., dissolving out by chemical means or by volatilization, etc.

(3) Note. If a metal catalyst is named a "Raney" catalyst, it will be presumed to be proper for this subclass unless it is positively disclosed to be made by a method not within the scope of the definition of this subclass.