US PATENT SUBCLASS 502 / 10
.~ Treating preformed sphere only

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

8  DF  FORMING OR TREATING A SPHERE, PROCESS ONLY {2}
10.~ Treating preformed sphere only

DEFINITION

Classification: 502/10

Treating preformed sphere only:

(under subclass 8) Process in which a previously made sphere is subjected to the action of an agent which perfects it for use as a catalyst or sorbent.

(1) Note. The agent may be chemical or physical.