Appeal No. 96-3893
Application 08/063,302
soft ferrite magnetic material (e.g., by sputtering), as the
examiner contends.
Furthermore, assuming for the sake of argument that it
was known to form soft ferrite magnetic films (e.g., by
sputtering) and further assuming that, as the examiner appears to
believe, soft ferrite magnetic materials (like metal magnetic
materials) have high saturation flux densities, it is not
understood why the artisan would have wanted to replace Terada's
ferrite blocks with films having a high saturation flux density.
In fact, Terada specifically teaches away from using a high
saturation flux density material (i.e., Sendust) in the back
portions 9 of his magnetic head because that would degrade its
high frequency performance. Instead, he forms the back portions
of a ferrite magnetic material having high resistivity in order
to improve the high frequency performance. As a result, we do
not reach the question of whether it further would have been
obvious in view of Yamada to select the permeability and
thickness of such a film to have a product in excess of 3000.
For the foregoing reasons, the rejections of claims 1
and 15 and their dependent claims 2, 4, 7, 8-10, 13, 14, 17, 19-
22, 25 and 26 under 35 U.S.C. § 103 are reversed.
REVERSED
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