Appeal No. 2006-0737
Reexamination Control No. 90/005,944
Reexamination of U.S. Patent No. 4,847,448
which is deposited on said plastic tape. . .” At this initial,
literal level, we see nothing which would exclude a composite
tape. A metal layer can be “deposited” on a plastic layer using a
variety of means, including an adhesive layer between the two.
We turn next to the specification for instances of use of the
term.
In the issued patent, column 1, lines 35-46, the following
discussion is found in the “Background of the Invention”:
In order to overcome the above-mentioned drawbacks [too large
diameter, lack of flexibility, poor shielding], it is
conceivable to design a coaxial cable in which the laterally
wound shielding layer is wound with an aluminum foil tape or
with a composite tape in which the aluminum foil is adhered
on the plastic tape. However, the latter type of coaxial
cable is not sufficiently flexible; therefore, the aluminum
foil may be broken and the shielding characteristic may be
degraded over time. Such problems are compounded if the cable
is used in a diagnostic device which requires a severe
bending condition of the cable.
The specification indicates that a coaxial cable of the
laminated plastic-aluminum foil type may be inflexible, encounter
breakage, and lose shielding.
The specification goes on to suggest that an object of the
invention is to overcome the problems of the prior art in that the
invention:
. . . has a metal deposited tape wound over the laterally
wound shielding layer which is formed over an insulating
layer, the metal deposited tape including a plastic tape and
a metal deposition layer deposited on the plastic tape . . .
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