Appeal No. 1998-2203
Application 08/428,497
are solvents used by the appellants in combination with water
(specification, page 13). Vaughan does not disclose that the
shaped articles to be imidized can include poly(amic acid)
paper made from a poly(amic acid) fibrid (page 6, line 100 -
page 7, line 4).
The appellants acknowledge that making polyimide paper
from a polyimide fibrid was known in the art, but do not
acknowledge that it was known in the art to make a poly(amic
acid) paper from a poly(amic acid) fibrid and then imidize the
paper to form a polyimide paper (specification, pages 2-3).2
The portion of FR ‘004 relied upon by the examiner
(answer, page 3) discloses making polyimide pulp particles by
a precipitation process involving shearing (page 4, item 3;3
pages 7-8).
The examiner relies (answer, page 3) upon the Sander
2It is axiomatic that our consideration of the prior art
must, of necessity, include consideration of the admitted
prior art. See In re Hedges, 783 F.2d 1038, 1039-40, 228 USPQ
685, 686 (Fed. Cir. 1986); In re Davis, 305 F.2d 501, 503, 134
USPQ 256, 258 (CCPA 1962).
3Item 3 on page 4 of the FR ‘004 translation is called
“aromatic polyamides”, but the structure shows that the
compounds are aromatic polyimides.
-4-4
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