US PATENT SUBCLASS 502 / 56
.~ By heat


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}
56.~ By heat


DEFINITION

Classification: 502/56

By heat:

(under subclass 20) Process in which regeneration or rehabilitation is effected by an increase in temperature.

(1) Note. The processes of this subclass may include the use of a solid treating agent, but the use of a liquid or gas treating agent is provided for in subclasses higher in the schedule.

SEE OR SEARCH THIS CLASS, SUBCLASS:

22+, for a liquid treating process which may include heating.