Appeal No. 1996-1974
Application No. 07/930,738
Accordingly, the claims before us on appeal are claims 1-5 and
8-15.
The claims on appeal are directed to an electrically
conductive composite material including carbon black particles
each coated with an intrinsically conductive polymer, e.g.
polyaniline. Claim 1, the broadest of two independent claims,
is representative:
1. An electrically conductive composition having improved
resistance to loss of conductivity in the presence of a
hostile environment, said electrically conductive composition
comprising:
a plurality of carbon black particles, each of said
carbon black particles having a coating of an intrinsically
conductive polymer in an amount sufficient to provide a
coating weight of from approximately 5 wt% to approximately 50
wt% of the carbon black particles coated with said
intrinsically conductive polymer, said coating being effective
to retain the electrical conductivity of the uncoated carbon
black particles and to protect the surfaces of said carbon
black particles from the adverse effects of a hostile
environment.
The following references of record are relied upon by
the examiner as evidence of obviousness:
Naarmann 4,738,757 April 19,
1988
Cameron 4,935,163 June 19,
1990
3
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