Appeal No. 1996-2718
Application No. 08/221,207
dropped material into fine ligaments which cool and solidify in the barrel to form flexible
superconducting fibers; and
e. collecting the flexible superconducting fibers.
2. Claim 4 provides that the superconducting material in the method of claim 1 is
Bi2Sr2Ca1Cu2O8.4
3. Claim 6 provides that the stream in the method of claim 1 is dropped in a collar in the
furnace to maintain the temperature of the stream before it reaches the barrel which is outside of the
furnace.
Prior art cited by the examiner as evidence of obviousness
E. Walz is cited as the primary reference for the first and second grounds of rejection under 35
U.S.C. ' 103.
1. Walz teaches a method of producing fibers of glass, among other materials (col. 1, lines
10-15), comprising the steps:
a. melting material (Fig. 1; col. 3, lines 45-50);
b. heating the melted material to a temperature above its melting point to form a
stream of melted material (col. 1, lines 48-56);
c. dropping the stream into a vertically extending barrel of a nozzle (Fig. 1; col. 3,
lines 45-50);
d. blowing a heated fiberizing gas downwardly through the barrel of the nozzle
(Figs. 1, 2a, 2b; col. 3, line 43, through col. 4, line 57), wherein
4 Claim 4 depends on claim 3, which in turn depends on claim 2, which in turn depends on claim 1.
4
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