Appeal No. 96-1675
Application No. 08/317,977
included in the aqueous compositions (column 13, line 42
through column 15, line 23), including buffering agents
(column 15, lines 1 through 9). A developing intensifier
including hydrogen peroxide, a buffering agent and having a pH
of 11.0 is disclosed at column 18, lines 14 through 68 and
column 20, lines 58 through 68.
We agree with the examiner's conclusion that Nakamura is
evidence that the combination of a color developing agent,
hydrogen peroxide and hydroxylamine sulfate is suggested by
and therefore obvious from the disclosure of Nakamura alone
or, Nakamura considered with Iwano. As specifically noted by
the examiner, Nakamura discloses in two examples (Examples 1
and 3) an aqueous composition including hydrogen peroxide, a
color developer and a buffering agent. The pH in Examples 1
and 3 of the developing-intensifying solution is 11.0. In
light of Nakamura's express disclosure that compounds which
make up known developing solutions may be added to the
intensifying-developing solution and because hydroxylamine
sulfate is specifically disclosed as a compound which may be
further added to the aqueous solution, indeed it is present in
both Examples 1 and 3, the person of ordinary skill in the art
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