Appeal No. 1998-0765
Application No. 08/451,853
materials and structure that is not accounted for in
the examiner’s combination.
The appellants further argue, id. at 7, that,
[p]rior to applicant’s disclosure, apparently no one
had considered that the problems associated with
traditional electrodes for high-dielectric materials
could be solved with perovskite electrodes. There
is no teaching cited by Examiner that a perovskite
electrode would not have the oxygen diffusion and
adhesion problems in integrated circuits which are
associated with the metal electrodes of the prior
art, such as the platinum electrode used by Kaiser.
We have studied the three references, Kaiser, McSweeney
and Miyasaka, and find no disclosure or teaching in any of
these references that the electrodes in the high dielectric
constant capacitors can be made of an alloy, rather than only
from metal. We find no suggestion where the electrodes can be
made from a perovskite, let alone one having a combination
composition such as claimed by appellants in part (b) of claim
16, and in other independent claims.
Therefore, we do not sustain the obviousness rejection of
these claims over Kaiser, McSweeney and Miyasaka et al.
8
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