Appeal No. 96-3652
Application No. 08/348,820
obviousness is established by presenting evidence that the
reference teachings would appear to be sufficient for one of
ordinary skill in the relevant art having the references
before him to make the proposed combination or other
modification. See In re Lintner, 458 F.2d 1013, 1016, 173
USPQ 560, 562 (CCPA 1972). Furthermore, the conclusion that
the claimed subject matter is prima facie obvious must be
supported by evidence, such as shown by some objective
teaching in the prior art or by knowledge generally available
to one of ordinary skill in the art that would have led that
individual to combine the relevant teachings of the references
to arrive at the claimed invention. See In re Fine, 837 F.2d
1071, 1074, 5 USPQ2d 1596, 1598 (Fed. Cir. 1988).
The appealed claims call for a method for forming a
silica-based barrier layer that includes the step of
projecting a ternary gaseous mixture comprising a major
portion of a neutral gas, a gaseous precursor of silicon and
oxygen through a nozzle projection slit at atmospheric
pressure transversely onto a heated glass surface located less
than 15 mm away while causing relative movement between the
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