Appeal No. 1999-0349
Application 08/621,379
polarization direction changing film and the first
glass plate.
To overcome the deficiencies of Hashimoto, the examiner turns
to L’Her and Wood. As stated by the examiner (answer, page
4), L’Her teaches the use of an adhesive 2, 4 to attach a
plastic film 3 to inner and outer sheets of glass in order to
strengthen the laminated glass. In the opinion of the
examiner, it would have been obvious to have attached the
polarization changing film of Hashimoto to the glass to
increase the safety of the glass.
We find that Hashimoto teaches (col. 1, lines 11-14) a
head-up display system for a vehicle which allows the driver
of a car to view vehicular information while looking out from
the front windshield of the car. L’Her discloses (col. 1,
line 67 - col. 2, line 3) a laminated glass for a windshield
of a vehicle comprised of two glass sheets and an intermediate
assembly formed of a core of PVC disposed between two adhesive
films. L’Her further discloses (col. 2, lines 62-65) that the
adhesive film retains glass splinters in case of glass
breakage. Although L’Her teaches the use of a plastic film
adhesively secured between two sheets of glass, we find that
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