Appeal No. 1997-3729 9
Application No. 08/362,107
conclude that the utilization of such grain would have been obvious to the person having
ordinary skill in the art.
Furthermore as to claim 11 requiring about 99% silver chloride, we previously found
that Takada explicitly teaches as little as 0.1 mole % silver iodides, the balance of the silver
halide accordingly including silver chloride. See column 9, line 61, and 65, and column
13, line 2. We accordingly conclude that the presence of 99% silver chloride required by
the claimed subject matter is a matter within the skill of the art.
Finally, as to the presence of thiosulfonate and a sulfinate compound having a
particular formula, Takada discloses that, “[p]hotographic emulsions used in the present
invention may contain various compounds in order to prevent fog during the manufacturing
process, storage, or photographic processing of a light-sensitive material, or to stabilize
photographic properties.” See column 23, lines 29-24. The compounds of the claimed
subject matter are not specifically disclosed in that section. The example of the specification
however, provide for the addition of sodium p-toluene sulfinate at column 36, lines 15-23,
within the scope of the invention, Table III, and the addition thereto of compound F-14, a
sodium thiosulfonate within the scope of the claimed subject matter. See column 36, line
57 and column 52 wherein F–14 is identified by formula. We further find that Takada
further teaches that the individual layers contained F-1 to F-17. See column 42, lines 15-
19. F-13 is identified at column 51 as constituting a sodium sulfinic acid within the scope
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