Appeal No. 1998-0335
Application 08/518,061
Matsuda principal lens system of the Japanese abstract means
the same thing as appellants’ main lens system. The main lens
system of these electron gun display devices are known to
include an intermediate electrode as well as other electrodes
[see background of the invention, page 1 of the
specification]. Therefore, we agree with the examiner that
the teachings of Matsuda would apply to any of the electrodes
making up the main lens system.
The fact that the preferred embodiment of Matsuda uses
plates which are not all identical does not diminish the
relevant teachings of Matsuda. Matsuda is cited only for the
teaching that multiple laminated thin plates can improve
focusing characteristics over a single thick plate. Matsuda
also teaches that the thin laminated plates are easier to
manufacture than conventional thick electrodes [translation,
pages 2-3]. Matsuda would have suggested to the artisan that
any conventional thick plate electrode might be improved by
using multiple laminated thin plates in addition to being
easier to manufacture. Therefore, it would have been obvious
to replace either of the thick plate intermediate electrodes
8
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007