Ex parte CALTON et al. - Page 6
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Board of Patent Appeals and Interferences > 2000 > Ex parte CALTON et al. - Page 6
Appeal No. 1996-1072
Application 08/132,289
an aqueous suspending medium (col. 8, lines 17-19; col. 9,
lines 11-12). The monomers are insoluble in the aqueous
suspending medium and are polymerized to form beads or spheres
suspended in the aqueous polymerization medium (col. 9, lines
39-43). The beads or spheres then are separated from the
aqueous suspending medium (col. 9, lines 24-27).
Flashinski discloses slowing the release properties of an
insect repellant by combining the insect repellant with a
copolymer of maleic anhydride and an alpha olefin (col. 1,
lines 10-12 and 52-53). This reference does not disclose an
alkylated PVP polymer.
GAF discloses an alkylated PVP polymer and teaches that
it has numerous skin care and cosmetic applications including
skin creams and lotions, sunscreens, facial makeup, baby care,
eye and lip pencils, lipsticks and mascaras (page 1). GAF
does not disclose combining the polymer with an insect
repellant.
The examiner argues that it would have been prima facie
obvious to one of ordinary skill in the art to use the GAF
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