Patent US4687336A successfully refreshed from Google Patents.
Patent US4279990A successfully refreshed from Google Patents.
US4279990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1980-09-10
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Granted: 1981-07-21
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Expires: 2000-09-10
Abstract
Abstract Discoloring and fading of silver halide color photographic materials are effectively prevented by incorporating a compound of the formula (I) or (II) in a silver halide photographic layer thereof ##STR1## wherein A represents an aryl group; R 1 , R 2 and R 3 each represents hydrogen, a halogen atom, an alkyl group, or an aryl group, except that R 1 , R 2 and R 3 cannot all be hydrogen atoms; R 4 and R 5 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an acyl group, an aryloxy group, a carboxy group, a sulfo group or a hydroxy group; and R 6 and R 7 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an acyl group, or a hydroxy group; or R 6 and R 7 together form an ##STR2## group or a 5-membered or 6-membered carbocyclic or heterocyclic ring.
Inventors
- 👤 Kozo Aoki
- 👤 Nobuo Furutachi
- 👤 Satoru Sawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:14
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39288; C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
160 words
A silver halide color photographic material comprising a photographic layer containing at least one of the compounds represented by the formula (I) or (II) ##STR16## wherein A represents an aryl group; R 1 , R 2 and R 3 each represents hydrogen, a halogen atom, an alkyl group, or an aryl group except that R 1 , R 2 , and R 3 cannot all be hydrogen; R 4 and R 5 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an acyl group, an aryloxy group, a carboxy group, a sulfo group, or a hydroxy group; and R 6 and R 7 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an acyl group, or a hydroxy group; or R 6 and R 7 together form an ##STR17## group or a 5-membered or 6-membered carbocyclic or heterocyclic ring.
Claim 2
Dependent Claim
160 words
A silver halide color photographic material comprising a photographic layer containing at least one of the compounds represented by the formula (I) or (II) ##STR16## wherein A represents an aryl group; R 1 , R 2 and R 3 each represents hydrogen, a halogen atom, an alkyl group, or an aryl group except that R 1 , R 2 , and R 3 cannot all be hydrogen; R 4 and R 5 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an acyl group, an aryloxy group, a carboxy group, a sulfo group, or a hydroxy group; and R 6 and R 7 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an acyl group, or a hydroxy group; or R 6 and R 7 together form an ##STR17## group or a 5-membered or 6-membered carbocyclic or heterocyclic ring.
Claim 3
Dependent Claim
22 words
A silver halide color photographic material as in claim 1 comprising a photographic layer containing a compound represented by the formula (I).
Claim 4
Dependent Claim
22 words
A silver halide color photographic material as in claim 1 comprising a photographic layer containing a compound represented by the formula (II).
Claim 5
Dependent Claim
29 words
A silver halide color photographic material as in claim 1, 2, or 3 wherein the photographic layer containing the compound is a magenta coupler-containing green-sensitive silver halide emulsion layer.
Claim 6
Dependent Claim
29 words
A silver halide color photographic material as in claim 1, 2, or 3 wherein the photographic layer containing the compound is a cyan coupler-containing red-sensitive silver halide emulsion layer.
Claim 7
Dependent Claim
36 words
A silver halide color photographic material as in claim 4 wherein the amount of compounds represented by the formulae (I) and (II) is from 0.5% to 200% by weight based on the weight of the coupler.
Claim 8
Dependent Claim
36 words
A silver halide color photographic material as in claim 5 wherein the amount of compounds represented by the formulae (I) and (II) is from 0.5% to 200% by weight based on the weight of the coupler.
Claim 9
Dependent Claim
36 words
A silver halide color photographic material as in claim 4 wherein the amount of compounds represented by the formulae (I) and (II) is from 2% to 150% by weight based on the weight of the coupler.
Claim 10
Dependent Claim
36 words
A silver halide color photographic material as in claim 5 wherein the amount of compounds represented by the formulae (I) and (II) is from 2% to 150% by weight based on the weight of the coupler.
Claim 11
Dependent Claim
39 words
A silver halide color photographic material as in claim 1 or 2 wherein A represents a substituted or unsubstituted phenyl or naphthyl group or a chroman, spirochroman, indan or spiroindan ring having an ##STR18## on the phenyl moiety thereof.
Claim 12
Dependent Claim
46 words
A silver halide color photographic material as in claim 10 wherein A represents a substituted phenyl group containing a halogen atom, an alkyl group, an alkoxy group, an alkoxycarbonyl group, an acyloxy group, an alkoxycarbonyloxy group, an alkylthio group or a hydroxy group as the substituent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |