Appeal No. 1997-4264
Application No. 08/421,131
are cited by the examiner to show that it was well known at
the
time of appellant's invention to substitute sewing for
adhesive, thermal or ultrasonic bonding. Zafiroglu '421 is
described by
the examiner as teaching "economically providing
stretchability
in elasticated [sic] portions of diapers, cuffs, etc. by
stitching with elastic threads" (Paper No. 8, page 3). The
examiner concludes that in view of the teachings of Van Vliet,
Burger and Zafiroglu '169, it would have been obvious to use
stitching to secure Lawson's elastic spacing members (77) to
the distal edge of the barrier cuff instead of adhesive as
taught by Lawson and, in view of Zafiroglu '421, it would have
been obvious to use elastic thread for the stitching (id.).
The appellant points out that Van Vliet, Burger and
Zafiroglu '169 teach stitch-bonding an elastic material to a
substrate material with conventional thread at selected
portions along the elastic material and that Zafiroglu '421
teaches a process for making stitch-bonded elastic fabrics and
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