Appeal No. 2006-1673 Παγε 6
Application No. 09/913,725
column 5, line 28). This is exactly the solution to
problems with which the JP'305 reference is concerned.
Takayama teaches a polyacetal resin composition
comprising a polyacetal resin, a polyolefin resin, an
inorganic filler and a lubricant that includes a liquid
ethylene-alpha-olefin oligomer and ethylenebissteramide
in the amount of 0.5 to 5 parts by weight based on 100
parts by weight of the resin composition (abstract).
The lubricant is used for improved dispersibility and
processability of the composition (abstract, column 5,
lines 31-35, column 8, lines 10-15). This demonstrates
that this lubricant is functional in compositions
containing polyolefins. Given that JP'305 employs a
lubricant, substitution of an improved variety does not
seem impractical. Therefore, it would have been obvious
to one having ordinary skill in the art at the time the
invention was made to use the ethylene-alpha-olefin
oligomer singly or in combination with the
ethylenebissteramide disclosed in JP'305 motivated by
the desire to obtain the porous film with improved
dispersibility and processability and thereby
facilitating the preparation of the film.
However, Takayama is not directed to a porous film, as is
Yano (JP ‘305) and appellants. Rather, Takayama is directed to a
particular polyacetal resin composition including a number of
required components that has good friction and abrasion
resistance properties useful in automobiles and electrical and
electronic appliances, as noted above. Here, the examiner simply
has not made the case that the various lubricants, particularly
the ethylene-alpha-olefin oligomer, among those disclosed as an
alternative for Takayama’s specific composition, would have been
recognized by one of ordinary skill in the art as being useful as
a component in the disparate porous film molding composition of
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