Appeal No. 1997-1667
Application No. 08/226,819
claims 13 through 15 and 21, stand withdrawn from further
consideration by the examiner.
The subject matter on appeal relates to a sensor
material, a polymerization catalyst, an organopolymer metal-
silica sol-gel composite and a single phase metal-silica sol-
gel derived optically transparent glass, all of which comprise
metal and silicon atoms wherein the metal atoms are uniformly
distributed within a sol-gel derived glass as individual metal
centers. This appealed subject matter is adequately
illustrated by independent claim 6 which reads as follows:
6. A sensor material wherein the material comprises a
single phase metal-silica sol-gel derived glass, the glass
exhibiting chromatic changes that detect the presence of
chemical species and comprising transition metal and silicon
atoms wherein the metal atoms are uniformly distributed within
the sol-gel derived glass as individual metal centers.
The references relied upon by the examiner as evidence of
obviousness are:
Dougherty 5,286,890 Feb. 15, 1994
Baiker, “Mixed Gels of Vanadia and Silica: Structural
Properties and Catalytic Behavior in Selective Reduction of
Nitric Oxide with Ammonia,” Journal of Catalysis, pp. 273-285
(1988).
Ghosh, “Semiconducting properties of sol-gel derived vanadium
silicate glasses,” Appl. Phys. Lett., Vol. 59, No. 7, pp. 855-
856 (1991).
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