Appeal No. 1997-3886
Application No. 08/232,460
oxygen as a carrier, with any remainder being a rare gas
(Office action dated July 9, 1996, Paper No. 28, page 8).
Appellant argues that Fath is only directed to the use of
nitrogen or argon or a mixture of the two with from 0 to 50%
of oxygen (Brief, page 6). Appellant’s argument is not
persuasive since Fath clearly teaches (column 2, lines 24-31)
[S]aid atmosphere at least initially
contains from 10 to 100%, typically
at the industrial level from 50 to
80% nitrogen monoxide or argon, or
a mixture of the two, from 2 to 20%
and typically from 15 to 20% oxygen
and the remainder if any being composed
of an inert gas in the sense of this
invention, i.e. nitrogen, carbon
dioxide or another rare gas or
mixtures thereof.
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