Appeal No. 95-0715
Application 07/936,942
Col. 1, lines 13-31, particularly lines 25-31. Thus,
Duchstein teaches that in order to overcome these problems, an
indigestible, porous perlite particle or granule, charged with
physiologically or medicinally effective substances, which has
a particle size of up to 5 mm should be added to the meal at a
size that
corresponds to the particle size range of the meal of
the usual finished swine fodder [i.e., especially grain
and soy meal (including bran meal)]to which it is added
so that the composition will contain 10 to 50 volume %
of the blown perlite particles.
Col. 2, lines 10-41. Duchstein further teaches that
A surprising advantage of the use of perlite in
accordance with the present invention, in the finished
swine fodder, is that there is little influence of the
additive, even when used in large volume proportions, on
the bulk weight apparently because the fine-grained
fraction of perlite fills the rough and broken surface
of the digestible fodder components, especially grit and
bran and/or soy meal while, conversely, the foamed meal
components of the digestible portion fill the open pores
of the perlite.
In other words after intensively mixing and blending
of the digestible and indigestible components of the
fodder, the composition has a relatively low volume and
hence the composition can be handled easily with
conventional machinery and techniques. [Col. 2, lines
42-56.]
We are of the view that Duchstein would have clearly
suggested to one of ordinary skill in this art that using meal
and food supplement granules of similar particle size confers
a number of benefits without regard to the particular animal
for which the feed is prepared. Indeed, grain and soy meal
(including bran meal) constitute a basic feed for other
livestock, including ruminants. We note in this respect that
the feed supplement granules of Autant are disclosed to be in
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