Appeal No. 1999-0097
Application No. 08/532,976
long chain diol that is encompassed by the claimed formula,
and which is used in the claimed amount.
Based on the collective teachings of Kolycheck and
Ohkubo, we agree with the examiner that it would have been
obvious for one of ordinary skill in the art to select the
sulfonated long chain diol of Ohkubo for the long chain diol
component of Kolycheck for the purpose of improving the
dispersion of the magnetic pigment. In addition, we agree
with the examiner that Ohkubo would have suggested utilizing
an amount of the sulfonated long chain diol that falls within
the claimed range.
Appellants, while conceding that Kolycheck does not
define the amount of long chain polyol present in the
composition, points to EXAMPLE 1 of the reference which uses
14.66 mol% of the long chain diol. However, as noted by the
examiner, the reference is not limited to its specific
examples, and Kolycheck provides no teaching that the long
chain diol must be used in an amount greater than 1-5 mol%.
Furthermore, whereas EXAMPLE 1 of Kolycheck uses a 2.4/1 ratio
of short chain diol to long chain diol, claim 2 of Kolycheck
recites that the ratio of short chain diol to long chain diol
-5-
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007