Appeal No. 2005-2002
Application No. 10/132,281
BACKGROUND
Appellants’ invention relates to a surface acoustic wave device and electronic
device using the same. An understanding of the invention can be derived from a
reading of exemplary claim 1, which is reproduced below.
1. A surface acoustic wave device, comprising:
a quartz substrate;
a plurality of first fingers, disposed on the quartz substrate, constituting an
interdigital transducer (lDT) for exciting shear-horizontal waves (SH waves); and
a plurality of second fingers, disposed on the quartz substrate, for
reflecting the SH waves; wherein
the quartz substrate is an ST-cut 90° X-propagation quartz substrate with
the Euler angles (0°, 2, 90°K2°), wherein the angle 2 is within the range of about
110° to about 150°, the first and second fingers are made of a material including
Au as a main component, and a normalized film thickness (H/8) of the first and
second fingers is within the range of about 0.003 to about 0.095.
The prior art reference of record relied upon by the examiner in rejecting the
appealed claims is:
Fujimoto et al. (Fujimoto) 6,154,105 Nov. 28, 2000
Rather than reiterate the conflicting viewpoints advanced by the examiner and
appellants regarding the above-noted rejections, we make reference to the answer
(mailed Dec. 21, 2004) for the examiner's reasoning in support of the rejections, and to
the brief (filed Aug. 24, 2004) and reply brief (filed Feb. 21, 2005) for appellants’
arguments thereagainst.
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