Appeal No. 2005-0235 7
Application No. 09/969,291
Given the advantages of the multi-layer insulating coatings discussed above, we
concur with the examiner that one of ordinary skill in the art would have been led to employ
the claimed multi-layer insulation coatings described by Tatematsu as the insulation
coating for a conventional electric conductor, such as an admittedly known electric
conductor, motivated by a reasonable expectation of improving the heat resistance and
mechanical properties of an insulation coating.
The appellant argues that Tatematsu is directed to improving the abrasion
resistance property of an electric insulation coating, rather than to solving a thermal
deterioration problem associated with an electrical conductor subjected to electrical
welding. See the Brief, pages 5-6. We do not agree.
As indicated supra, Tatematsu as a whole clearly teaches that its multi-layer
insulation coating not only improves abrasion resistance properties, but also improves heat
resistance properties. Thus, Tatematsu, like the appellant, is also directed to solving a
known problem associated with thermal deterioration of a conventional insulation coating.
Even if these heat resistance properties referred to in Tatematsu are not relevant to
the heat resistance properties associated with an electric conductor subject to welding
heat as alleged by the appellant, our conclusion would not be altered. The fact remains
that the insulation (polyamideimide insulation coating) used for such electric conductor
(subject to welding heat) can be made further heat resistant by employing the claimed
multi-layer insulation coatings described in Tatematsu as indicated supra. This fact alone
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