Patent US4393766A successfully refreshed from Google Patents.
US4070191A
Expired / Lapsed
US
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Silver halide emulsion containing colored magenta coupler for photography
Assignee: Konica Minolta Inc
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Filing: 1974-03-27
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Granted: 1978-01-24
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Expires: 1994-03-27
Abstract
Abstract A coloured magenta coupler for photography is disclosed which is represented by the following general formula: ##STR1## wherein R is substituted phenyl, R 1 and R 2 individually stand for hydrogen, halogen, hydroxyl, alkyl, alkoxy or acylamino, with the proviso that one of R 1 and R 2 is hydroxyl but that both are not hydroxyl simultaneously, R 3 is hydrogen, halogen, alkyl, nitro or acylamino and R 4 stands for hydrogen, halogen or a monovalent organic residue.
Inventors
- 👤 Hiroyuki Imamura
- 👤 Shui Sato
- 👤 Tamotsu Kojima
- 👤 Takaya Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:57
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/333; G03C7/3335; C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3647; C09B29/3652; C09B29/366
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
A photo-sensitive silver halide color photographic material having a support and a photo-sensitive silver halide emulsion layer coated thereon, comprising a colored magenta coupler represented by the following general formula: ##STR5## wherein R is phenyl having a substituent or substituents selected from chlorine, alkyl, alkoxy and acylamino; R 1 and R 2 are individually hydrogen, halogen, hydroxyl, alkyl, alkoxy or acylamino provided that one of R 1 and R 2 is hydroxyl and that the other is not hydroxyl; R 3 is hydrogen, halogen, alkyl, alkoxy, nitro or acylamino; and R 4 is hydrogen, halogen or a monovalent organic residue selected from alkoxy, acylamino, carbamoyl, sulfamoyl, alkylsuccinimido, alkoxycarbamido, alkoxycarboalkylamino, aralkoxycarboalkylamino, alkylaminocarboalkylamino, arylaminocarboalkylamino, aralkylaminocarboalkylamino, or nitro.
Claim 2
Dependent Claim
115 words
A photo-sensitive silver halide color photographic material having a support and a photo-sensitive silver halide emulsion layer coated thereon, comprising a colored magenta coupler represented by the following general formula: ##STR5## wherein R is phenyl having a substituent or substituents selected from chlorine, alkyl, alkoxy and acylamino; R 1 and R 2 are individually hydrogen, halogen, hydroxyl, alkyl, alkoxy or acylamino provided that one of R 1 and R 2 is hydroxyl and that the other is not hydroxyl; R 3 is hydrogen, halogen, alkyl, alkoxy, nitro or acylamino; and R 4 is hydrogen, halogen or a monovalent organic residue selected from alkoxy, acylamino, carbamoyl, sulfamoyl, alkylsuccinimido, alkoxycarbamido, alkoxycarboalkylamino, aralkoxycarboalkylamino, alkylaminocarboalkylamino, arylaminocarboalkylamino, aralkylaminocarboalkylamino, or nitro.
Claim 3
Dependent Claim
17 words
A photo-sensitive silver halide color photographic material according to claim 1 further comprising a colorless magenta coupler.
Claim 4
Dependent Claim
59 words
A color photographic material comprising a support having thereon at least one silver halide emulsion layer containing a colored coupler of the formula: ##STR6## wherein R 1 is hydrogen or alkyl; R 2 is phenyl substituted with chlorine, alkoxy or acylamino; R 3 is chlorine or alkoxy, and R 4 is a moiety containing a hydrophobic diffusion resisting group.
Claim 5
Dependent Claim
59 words
A color photographic material comprising a support having thereon at least one silver halide emulsion layer containing a colored coupler of the formula: ##STR6## wherein R 1 is hydrogen or alkyl; R 2 is phenyl substituted with chlorine, alkoxy or acylamino; R 3 is chlorine or alkoxy, and R 4 is a moiety containing a hydrophobic diffusion resisting group.
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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |