Appeal No. 96-1950
Application No. 08/099,929
("outer tube rubber layer") of "C" (epichlorohydrin rubber
(ECO)). The thicknesses of the disclosed layers, and the
thickness ratios (1:16 and 1:10, respectively) are within the
ranges recited in claim 1.
(B) Claims 2 to 5 are rejected under 35 U.S.C. § 103 as
unpatentable over Igarashi ‘647 in view of Green, which
discloses a fuel transporting hose having an inner layer
(liner) 16 of FEP (col. 3, lines 46 to 49). In order to
prevent the build up of electrical charges in the liner 16 due
to fluid flow, Green teaches that the liner may contain carbon
black throughout (col. 6, lines 54 to 57), in view of which
teaching one of ordinary skill would have been motivated to
incorporate carbon black in the inner layer of the Igarashi
‘647 hose. The resistivity and concentration of additive
recited in claims 3 and 4 would be obvious matters of choice,
selected to achieve the desirable result taught by Green.
(C) Claim 8 is rejected under 35 U.S.C. § 103 as unpatentable
over Igarashi ‘647 in view of Igarashi ‘906. To select one of
the particular recited fibers for the reinforcing textile
layer of Igarashi ‘647, and to form said layer by braiding or
spiraling, would have been obvious to one of ordinary skill in
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