Appeal 2007-3417
Application 10/351,739
I. BACKGROUND
The invention relates to a silicon single crystal. Claims 1 and 3 are
illustrative of the subject matter on appeal:
1. A silicon single crystal, produced using the Czochralski method and
having a <113> orientation comprising
an ingot which is suspended from a dash seed and said ingot having
two conical end pieces, one of said end pieces being connected to the dash
seed; wherein the dash seed has a length of at most 70mm.
3. The silicon single crystal as claimed in claim 1,
wherein the dash seed has a diameter of at most 5 mm at its narrowest
point.
The Examiner relies on the following prior art references to show
unpatentability:
Kikuchi US 6,072,854 Jun. 6, 2000
Aydelott US 6,106,611 Aug. 22, 2000
Specifically, the Examiner rejects claims 1, 3, and 8 under 35 U.S.C.
§ 103(a) as unpatentable over Aydelott in view of Appellants’ admission and
Kikuchi.
II. DISCUSSION
The dispositive issue arising from the contentions of Appellants and
the Examiner is: Have Appellants overcome the rejection by showing that
the formation of a silicon single crystal having a <113> orientation was not
within the capabilities of those of ordinary skill in the Czochralski single
crystal forming art either with regard to the single crystal of claim 1 or the
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