Appeal No. 95-0015
Application No. 07/869,694
suggestion that would lead one to the combination of materials
and processing conditions set forth in the instant invention
(brief, page 7). We do not find this argument to be convincing
because it would have been prima facie obvious to one of ordinary
skill in the art to use Johnson’s grains in the Mihara method to
obtain reduced pressure sensitivity and reduced reciprocity
failure without having significantly decreased speed (col. 2,
lines 13-21), and to sensitize the grains prior to heating in
view of James’ teaching that the sensitizing reaction should take
place at a higher temperature than that at which the sensitizer
is added (page 149).
Appellant argues regarding claims 2 and 8 that the applied
references do not suggest use of chemical sensitizers of gold and
sulfur and heating after adding the chemical and spectral
sensitizers (brief, pages 7-8). Mihara (col. 29, lines 10-37)
and Johnson (col. 6, lines 5-7) both disclose use of chemical
sensitizers of gold and sulfur. One of ordinary skill in the art
would have been motivated to add the chemical and spectral
sensitizers prior to heating in view of the teaching by James as
discussed above.
6
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007