Appeal 2007-2233
Application 10/228,754
substrate, removing the substrate from the bath; rotating the catalyst
composition containing substrate 180°; and “then applying a blast of air to
the end of the substrate which has been immersed into the slurry to distribute
the catalyst composition therewithin.”
The Examiner finds Rosynsky teaches the method steps of partially
immersing an end of a hollow substrate into a bath containing a catalyst
composition, applying a vacuum to a substrate which draws the composition
into the interior of the substrate, removing the substrate from the bath, and
drying the substrate prior to curing (Answer 3). The Examiner finds
Rosynsky further teaches that “[t]he typical coating operation requires the
immersion of one end of the substrate into the slurry followed by drying and
then the insertion of the opposed end of the substrate into the slurry followed
by drying and curing” (id. 3-4, citing Rosynsky 11:10-15 and
22-27). The Examiner takes the position “[s]ince the substrate has opposed
ends, . . . the substrate must, necessarily, be rotated 180° in order to coat
both opposing ends” (id. 4).
The Examiner determines Rosynsky does not apply a blast of
pressurized air to the substrate to form a uniform coating therein (Answer 4).
The Examiner finds Watanabe teaches the method steps of applying a
catalyst composition to the interior of a hollow substrate “like Rosynsky,”
and after coating with the composition, “pressurized air is supplied from the
top of the substrate to discharge liquid which remains in the inner cells of
the substrate thereby causing the coating liquid to adhere speedily and
uniformly” (id., citing Watanabe col. 3, ll. 40-63). The Examiner determines
since both references teach applying a catalyst composition and both teach a
3
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