Appeal No. 2004-0600 Paper 16
Application No. 10/024,983 Page 6
2. the prior art
a. the primary reference, Lin, differs in not reciting the
claimed (a) linear silicone polyether, (b) ",T-diene
crosslinked silicone elastomer having no oxyalkylene
units in its structure, (c) nonionic organic emulsifier,
and (d) solvent
17. Lin describes W/O emulsions containing oil soluble vitamins, e.g., vitamins A and
E, entrapped in an elastomeric silicone polyether, which emulsions are useful in skin
and cosmetic compositions (abstract; c. 1, ll. 36-60).
18. According to Lin, "effective vitamin delivery can only be accomplished by using
an elastomeric silicone polyether containing 4-30 [ethylene oxide] (EO) units in its
molecule" (c. 1, ll. 54-58, emphasis added).
19. Thus, Lin differs from the claimed invention in not reciting
(a) the claimed linear silicone polyether (claim 7) in the amount of 0.2-3.0 wt.%
(claim 10), (b) the claimed ",T-diene crosslinked silicone elastomer having no
oxyalkylene units in its structure (claim 7) in the amount of 0.1-4.0 wt.% (claim 10), (c) a
nonionic organic emulsifier (claim 7) in the amount of 0.1-4.0 wt.% (claim 10), and (d) a
solvent (claim 10), e.g., a volatile cyclic alkyl siloxane or a volatile linear alkyl siloxane of
defined formulae (claims 10-12).
b. the secondary reference, Schilling, describes the
claimed linear silicone polyether
20. Schilling describes linear or branched (c. 6, ll. 17-19) "siloxane-ether block
copolymers" (c. 6, ll. 7-14), including ABA block copolymers (c. 6, ll. 29-34).
21. According to the examiner, "Schilling ... teaches a linear silicone polyether, with
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