Appeal No. 2002-0405
Application No. 07/325,269
Chu et al. (Chu), “Evidence for Superconductivity above 40 K in
the La-Ba-Cu-O Compound System,” Phys. Rev. Letters, 58(4), pp.
405-407 (20 January 1987).5
Bednorz et al. (Bednorz), “Possible High Tc Superconductivity in
the Ba-La-Cu-O System,” Z. Phys. B-Condensed Matter, 64, pp.
189-193 (1986).
Bednorz et al. (Ref. No. [17]), “Phase Diagram of the (LaAlO3)1-x
(SrTiO3)x Solid-Solution System, for x # 0.8," Mat. Res. Bull.,
84, pp. 181-187 (1983).6
GROUNDS OF REJECTION
Claims 3, 19 and 22-24 stand rejected under 35 U.S.C.
§ 102(a) or, in the alternative, under 35 U.S.C. § 103(a) as
obvious over Hor.
Having found stronger evidence of unpatentability, we vacate
this rejection in favor of new grounds of rejection under the
provisions of 37 CFR § 1.196(b) as set forth below.
BACKGROUND
The present invention relates to mixed metal oxide
superconducting materials. According to appellants,
superconductors produced by the sintering method (a conventional
process) have various drawbacks which limit their usefulness in
5This document is referenced by Hor as disclosing the solid-state
reaction method used for preparation of the compounds examined in Hor.
See, supra, note 4.
6This document describes the coprecipitation method used in
Bednorz. See Bednorz, p. 190, col. 1.
4
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