Appeal No. 1999-1136
Application No. 08/771,373
coating as disclosed by Tanji, and thus would meet all the
limitations of claim 3.
Rejection (2) therefore will be sustained.
Rejection (3)
Claim 4 reads:
4. A flash evaporator vaporization boat as defined in claim
3 having an intermediate layer between the coating of PBN and
said graphite body.
In considering rejection (4), we interpret the recited
"intermediate layer" as requiring a layer composed of a
substance other than PBN, this being consistent with
appellants' disclosure (page 4, line 11 et seq.) and with the
apparent interpretation placed on this claim by appellants and
the examiner.
The examiner states on page 5 of the answer that
appellants' argument concerning Finicle is not persuasive
because:
The claimed invention calls for having an
intermediate layer such as pyrolitic graphite
between a PBN coating and a graphite body. Finicle
shows in Figure 1, an intermediate layer such as
pyrolitic graphite shown as element 8 provided
between a PBN coating and a graphite body. Also,
Finicle is in the same field of endeavor which is in
the field of using PBN coating to insulated heated
vessels or crucibles.
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