Appeal No. 2000-1006
Application 08/974,148
sufficient to convert the water insoluble organic material to an
ionized form but does not “exclude the formation of water soluble
reaction products after treating the surface with the aqueous
solution.” Examiner’s Answer, page 4. Moreover, Jackson teaches
that the formation of soaps “is probably due to ionization of
flux acids by basic solutions.” Jackson, column 3, lines 45-47
(emphasis added). Although Jackson does not specifically state
that the organic materials are converted to an ionized form
having a charge which is the same charge as that of the solid
surface, Jackson does disclose the removal of flux acids from
substrates which may comprise a metal such as aluminum (see id.
at lines 2-3; column 4, lines 45-54; Example 2) which has an
isoelectric point of 9.0 (see Specification, page 4) at a pH of
at least 10.5 (Jackson, column 3, lines 47-50).
Thus, Jackson teaches a method of cleaning a solid
surface to remove insoluble organic materials by treating the
solid surface with an oxidant in an amount sufficient to convert
the water insoluble organic material to an ionized form having a
charge which is the same as that of the solid surface, a pH
adjusting agent being added in an amount sufficient to provide a
pH greater than the isoelectric point of the solid surface for an
10
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