US PATENT SUBCLASS 502 / 55
.~.~ Steam

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

20  DF  REGENERATING OR REHABILITATING CATALYST OR SORBENT {4}
34  DF  .~ Gas or vapor treating {5}
55.~.~ Steam

DEFINITION

Classification: 502/55

Steam:

(under subclass 34) Process in which the treating fluid consists essentially of vaporized water.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51, for a similar process using steam added to air or other free oxygen containing gas.