Appeal No. 1997-3701 11
Application No. 08/141,457
the claimed subject matter. See page 7. The compounds are described as improving the
stability of organic coloring materials against light. See page 6. They are added to
photographic image forming dyes and couplers including magenta couplers. See page
13. The magenta couplers include 5-pyrazolone compounds. See page 14, 16 and 17.
The sulfur containing stabilizers designated as A-1 to A-29, page 10-11 are added to
magenta dye layers and are further described as antifading agents. See pages 29-31 and
35.
Lok discloses a color photographic element having a magenta dye forming coupler
comprising a latent image stabilizer compound of the invention. See column 7, lines 52-
65. The compounds disclosed include heterocyclic organic compounds having sulfur
as one of the hetero atoms and accordingly fall within the scope of the claimed subject
matter wherein, “R and R may together form a ring including the sulfur atom.” See8 9
Abstract, and column 2, line 36-68. The sulfur containing compounds are exemplified
by Compounds B and C and K and L. See column 4, lines 17-33 and column 5, lines
25-39.
Fuseya discloses a development inhibitor precursor containing the requisite sulfide
group. See Abstract, column 1, lines 61-62, and column 2, lines 17-60, column 3, line
4 to column 4, line 15. The compounds are present in photographic elements. See
column 2, lines 64-68 and column 6, lines 40-53. Fuseya further discloses that the
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