Appeal No. 1999-0337
Application 08/323,839
1, column 2, lines 15 through 21). The following passage
describes Booth’s departure from the customary preparation of
the inner or filler plies:
it has been found that, by the addition of
appropriate material, of which at least a portion is
applied after the water suspension of stock has been
divided for delivery to the several molds, it is
possible to control the rate of drainage from the
several plies and from the consolidated wet web in a
more logical manner and which assures desirable
results which have hitherto been unobtainable except
with additional cost for mechanical equipment and
cost for operation of such additional equipment.
In practice, it has been found desirable to apply
two or more chemical reagents, for example, water
soluble inorganic chemicals, which mutually react to
form an insoluble precipitate to cause slower water
drainage. One chemical may be added at or before
the division of the stock referred to above, or
after the division of the water suspension of stock
to be delivered to the several molds has been
effected. The other chemical used should be applied
after the stock has been divided into the separate
streams. In certain instances it is desirable to
provide diverse treatments for the several plies of
stock [page 1, column 2, lines 22 through 46].
In combining Beck and Booth to reject independent claims
1, 5 and 17, the examiner has concluded that “it would have
been obvious to modify Beck, with Booth in order to provide
diverse treatments for the different plies of stock thus
forming divided stock flows with different properties, as
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