Appeal No. 2005-0711
Application No. 09/943,644
OPINION
The examiner finds that Smith discloses the use of
copolymers formed from pre-thermoset oligomeric solutions with
50% solids of “1-co-2" (see Scheme 2 on page 2) in optical
waveguides (Answer, page 6). The examiner also finds
that example 2 of Babb discloses a copolymer of 4,4'-
bis(trifluoroethenyloxy)-alpha-methylstilbene and 1,1,1-tris(4'-
trifluoroethenyloxyphenyl) ethane (TVE)(Answer, page 10).
With regard to the secondary references, the examiner finds
that (1) Kennedy teaches spin coating and the effects of the
percent solids on the thickness of PFCB polymers (Answer, pages 7
and 11); (2) Fischbeck teaches optical waveguide coating coatings
of 10 microns for TVE-PFCB polymers in the formation of single
mode waveguides (id.); (3) Shacklette teaches the use of upper
cladding layers for optical waveguides (Answer, pages 8 and 11);
(4) Shah teaches that the simple choice of co-monomer allows
control of refractive indices, glass transition temperature and
long term thermal stability (id.); and (5) Kaneko teaches that
the polymers used in the core and cladding layers may be the same
materials or different, but the cured clad polymer must have a
refractive index less than that of the cured polymer core
(Answer, page 8).
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