Appeal No. 96-1669
Application 08/054,125
prior art reference or shown to be common knowledge of
unquestionable demonstration. Our reviewing court requires
this evidence in order to establish a prima facie case. In re
Knapp-Monarch Co., 296 F.2d 230, 232, 132 USPQ 6, 8 (CCPA
1961); In re Cofer, 354 F.2d 664, 668, 148 USPQ 268, 271-72
(CCPA 1966).
Turning to Ohta, we find that Ohta teaches on page 3
that the moisture-impermeable film may be selected from
inorganic moisture-impermeable film such as AlN, SiN, ZnS,
Al O , SiO , SiAlON, or from organic moisture-impermeable films23 2
such as polyvinylidene chloride and
polytrifluorochloroethylene. Ohta further discloses that
among these materials AlN is particularly preferred.
Furthermore, Ohta teaches that the thickness of the moisture-
impermeable films depends on the material used thereof.
Further, we note that Ohta does not teach using AlSiN nor does
Ohta teach a product of the refractive index of the moisture
proof film and the thickness thereof is 42 nanometers or less.
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