Appeal No. 1997-1797
Application No. 08/198,936
The subject matter on appeal relates to a process for the
production of filaments of potentially superconducting
material which comprises preparing a liquid suspension of
potential superconducting material and forming multicomponent
filaments having a core of the suspension and a viscose sheath
which contains cellulose xanthate. Further details of this
appealed subject matter are set forth in representative
independent claim 1 which reads as follows:
1. A process for the production of filaments of
potentially superconducting material comprising:
(a) preparing a liquid suspension which contains at least
10 weight percent potential superconducting material;
(b) forming multicomponent filaments having a core of the
suspension and a viscose sheath which contains cellulose
xanthate; and
(c) thereafter, regenerating cellulose form [sic, from]
the cellulose xanthate to form a rayon matrix.
The references relied upon by the examiner as evidence of
obviousness are:
Cass, “Fabrication of Continuous Ceramic Fiber by the Viscous
Suspension Spinning Process,” Ceramic Bulletin, Vol. 70, No.
3, pp. 424, 426, 428 and 429 (1991).
Japanese 63-308812 December 1988
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