Appeal No. 95-1238
Application 08/009,406
through a sample. However, Arendt fails to teach or suggest
using absorption measurements on only two x-ray wavelengths in
order to determine the combined amount of titanium oxide and
calcium carbonate, the amount of clay and the total amount of
the three materials, titanium oxide, calcium carbonate and clay.
Utt fails to teach or suggest using absorption measurements
on only two x-ray wavelengths as well. We fail to find that Utt
teaches in Figure 2 that the absorption coefficients of titanium
oxide and calcium carbonate are about the same as argued by the
Examiner in the answer. Utt’s Figure 2 shows three separate
curves for attenuation coefficients for titanium oxide and
calcium carbonate. Utt does not teach or suggest using
absorption measurements on only two x-ray wavelengths in order to
determine the combined amount of titanium oxide and calcium
carbonate, the amount of clay and the total amount of the three
materials, titanium oxide, calcium carbonate and clay.
We fail to find any suggestion in either reference to modify
Arendt to obtain Appellants’ claimed invention. Since there is
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