Appeal No. 2002-0405
Application No. 07/325,269
21, which are all of the claims remaining in the application, are
allowed. Claims 3, 19 and 22 are representative of the subject
matter on appeal and are reproduced below:
3. A superconducting mixed-metal oxide obtainable by
the method of Claim 1.2
2Claim 1 reads as follows:
1. A method for preparing a solid superconducting mixed-metal
oxide in a predetermined shape and form, comprising the steps of:
(a) providing a solution of salts of metals contained in said
superconducting mixed metal oxide of a predetermined composition, each
of said salts being present in an amount necessary to provide the
respective predetermined stoichiometric amount of a metal required in
said superconductive mixed metal oxide; the counterions of each metal
ion, or the hydrolysis products of said counterions, in said solution
of salts being removable from said solution by evaporative methods;
(b) subjecting said solution to hydrolyzing conditions and
removing said counterions and hydrolysis products thereof from said
solution by evaporative methods with a substantial portion of the
solvent;
(c) converting said metal ions to a mixed-metal oxide precursor
of said superconducting mixed-metal oxide;
(d) peptizing said mixed-metal oxide precursor to form a viscous
polymeric sol;
(e) forming said viscous polymeric sol into a predetermined
shape and form and heat-setting said sol into a flexible, ductile,
handleable gel;
(f) firing said gel in the presence of oxygen at a temperature
and for a period of time sufficient to volatilize any remaining vapors
and organic materials to form said solid superconducting mixed metal
oxide.
2
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