Appeal 2007-3794
Application 10/850,517
II. Findings of Fact ("FF")
The following findings of fact are supported by a preponderance of
the evidence of record. To the extent any "finding of fact" is a conclusion of
law, it should be so treated.
A. Appellants' Specification
[1] Paper-faced foam boardstocks are said to be known in the art, e.g., for
use in structural siding products (Spec., p. 1, l. 8 - p. 2, l. 10).
[2] Paper-faced foams are also said to require moisture resistance for
structural integrity (Specification, p. 1, ll. 22-24).
[3] Impregnating a paper facer of the foam product with silane, preferably
an organosilane such as methyltrichlorosilane, is said to provide the
product with waterproof properties and resistance to delamination and
dimensional changes with aging and exposure to adverse weather
conditions (Specification, p. 12, ll. 1-5).
[4] The foam core of the product may be formed of rigid
polyisocyanurate foam (Specification, p. 4, ll. 19-22).
B. Geary
[5] Geary discloses a composite board comprising a filled
polyisocyanurate foam center board and facers of cellulosic materials,
e.g., paper or cardboard, reinforced with glass strands and/or glass
fibers, mated with the upper and lower surfaces of the center board
(Geary, p. 2, ¶ 27; p. 3, ¶¶ 32-33; Fig. 1).
[6] The Examiner found that Geary does not disclose treating the paper
facers with silane (Sub. Answer, 3).
obvious over Bondoc (US 4,543,158) and Bieri (US 3,389,042). [Substitute
Examiner's Answer ("Sub. Answer"), mailed 23 February 2007, p. 2.]
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