Appeal No. 1998-0215
Application No. 08/052,671
narrow construction.”) The transitional phrase “consisting
essentially of” is not used in the context of the claimed
electrical insulation material.
As pointed out by appellant (e.g., Brief, page 5 and
Reply Brief, page 2), Pedlow describes an electrical
insulation material which includes, inter alia, high melting
point fiber and intumescing substances. However, these
substances are not employed as heat-bondable components. See
also Reply Brief, page 2. Rather, Pedlow uses thermoplastic
resins as heat-bondable components (component bondable to
woven glass upon heating). See column 6. Thus, we do not
agree with appellant that the phrase in question precludes the
presence of the high melting point fiber and intumescing
substances described in Pedlow.
Even if we were to interpret the phrase in question as
limiting the resulting thermoplastic coating (not the claimed
heat-bondable component) as consisting essentially of a
thermoplastic resin, our conclusion would not be altered. In
this regard, it is important to note that appellant has the
burden of showing that the high melting point fiber and
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