Appeal No. 96-1675
Application No. 08/317,977
would have been motivated to add hydroxylamine sulfate to the
intensifying-developer solution. The buffering agent would, by
definition, be expected to maintain the pH of the
intensifying-developer solution at 11.0, even with the further
addition of hydroxylamine sulfate. Accordingly, there would
have been a reasonable expectation of obtaining the pH claimed
by appellant for his composition when following the express
disclosure of Nakamura.
Further, Iwano expressly discloses that it is
conventional in the art to combine color developer solutions
with peroxide solutions to form a single solution for
developing images. Accordingly, Iwano provides further
motivation for combining the color developing solutions from
Examples 1 and 3 of Nakamura with the developing- intensifying
solutions in Examples 1 and 3 of Nakamura. Again, the
presence of a buffering agent in the developing-intensifying
solution would have provided a reasonable expectation to the
routineer of obtaining a pH of 11.0 after the two solutions
were combined.
Accordingly, for all the above reasons, we conclude that
the examiner has established by a preponderance of evidence
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