US PATENT SUBCLASS 502 / 1
HAVING FOREIGN OR DIVERSE FUNCTION (E.G., PREVENT CORROSION, ETC.)


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

1HAVING FOREIGN OR DIVERSE FUNCTION (E.G., PREVENT CORROSION, ETC.) {1}
2  DF  .~> With structure having utility in addition to support or carrier


DEFINITION

Classification: 502/1

HAVING FOREIGN OR DIVERSE FUNCTION (E.G., PREVENT CORROSION, ETC.):

(under the class definition) Composition having utility in addition to catalysis or sorbency.

(1) Note. The diverse function may comprehend myriad uses, e.g., impart color, etc., but a claimed function provided for in Class 252, Compositions in the schedule higher than subclass 478 is superior and will govern classification.

(2) Note. Some wick compositions may be classified here on the basis of a heat conductivity in addition to sorbency, but the bulk of wick compositions are classified in subclasses 400+.

(3) Note. A composition intended to function as an ignitor by catalytic and incandescing action is proper for this subclass.

SEE OR SEARCH CLASS

252, Compositions,

1, for a generically claimed composition having several disclosed uses and the appropriate subclass for a composition having a claimed utility provided for in that class schedule down to subclass 194, inclusive. The rules for determining Class placement of the Original Reference (OR) for claimed chemical compositions are set forth in the Class Definition of Class 252 in the section LINES WITH OTHER CLASSES AND WITHIN THIS CLASS, subsection COMPOSITION CLASS SUPERIORITY, which includes a hierarchical ORDER OF SUPERIORITY FOR COMPOSITION CLASSES.