Appeal No. 1998-3309 5
Application No. 08/618,306
Berghahn’s invention is directed to an improvement over
prior art antiperspirant or deodorant applicators which use a
shaped, non-flexible, non-deformable, sintered porous synthetic
plastic resin applicator element having a controlled porosity
and omni-directional interconnecting pores. See col. 1, ll. 49-
60. Berghahn’s improvement includes the addition of venting
means, e.g., vent 31 in Figure 5, for venting the interior of
the container to the atmosphere and fluid restricting means 34
for restricting the flow of the product from within the interior
of the container body to the applicator element. Berghahn also
teaches that the pore size for the applicator element 4 may
range from 10 to 500 microns with 20 to 200 microns being
preferred. See col. 5, ll. 3 and 4.
Lathrop, like Berghahn, discloses an improvement over prior
art antiperspirant or deodorant applicators which use a shaped,
non-flexible, non-deformable, sintered porous synthetic plastic
resin applicator element having a controlled porosity and
omni-directional interconnecting pores. See col. 1, ll. 16-35.
Lathrop attempts to improve the capillary flow of the product
through the porous applicator head by including a capillary
pressure compensation valve 45 and a “means to generate pressure
within the container.” See col. 2, ll. 58-65. The “means to
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