Appeal No. 1998-3320
Application 08/417,017
resistance, which is inversely related to conductance, by 20%
or more, and that the use of 0.5 wt% titanate increased the
specific resistance much more than did the use of 0.1 wt%
titanate. In neither example does the conductance appear to
be reduced below 10 S. Thus, Tsunaga would have fairly-7
suggested, to one of ordinary skill in the art, use of an
amount of titanate which decreases the conductance of the
particles to a value which is at least 20% below that of
particles having no titanate but which does not reduce the
conductance below 10 S.-7
The appellants argue that Tsunaga teaches that the silver
may partially coat the copper particles, but does not teach
that the particles may be partially coated with the titanate
coupling agent (brief, page 4). Tsunaga’s teaching that the
silver material may partially coat the copper particles and
that the titanate coupling agent may be combined to the silver
without being combined to the copper (col. 2, lines 3-10; col.
3, lines 31-36) indicates that the titanate coupling agent can
coat the portion of the copper particles coated by the silver
without coating the portion which is not coated by the silver
and, therefore, can partially coat the copper/silver
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