US3808945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive silver halide color photographic emulsion
Assignee: Konica Minolta Inc
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Filing: 1972-03-21
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Granted: 1974-05-07
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Expires: 1992-03-21
Abstract
Abstract AND X is hydrogen or a group which will split off during the dye forming reaction and will not substantially color the coupler, is incorporated into a photographic material containing a lightsensitive gelatino silver halide photographic emulsion. The resultant material exhibits improved graininess and control of photographic gamma, without exhibiting desensitization. WHEREIN R is substituted aryl, substituted aralkyl or a saturated or unsaturated aliphatic group having 1-22 carbon atoms; R'' is an aliphatic group having 1-6 carbon atoms; R'''' is COCH3, COOC2H5 or OR AND AT LEAST ONE COUPLER OF THE FORMULAS: An alkoxal-oxy type coupler of the formula:
Inventors
- 👤 I Inoue
- 👤 T Endo
- 👤 K Kasai
- 👤 S Matsuo
- 👤 S Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:01
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/344; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30523; G03C7/333; G03C7/3335; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
31 words
A light-sensitive gelatino silver halide color photographic emulsion as claimed in claim 1, wherein said alkoxal-oxy type coupler of the general formula (I) is a compound of the following structural formula
Claim 2
Dependent Claim
30 words
A light-sensitive gelatino silver halide color photographic emulsion as claimed in claim 1, wherein said colorless compler of the general formula (II) is a compound of the following structural formula
Claim 3
Dependent Claim
30 words
A light-sensitive gelatino silver halide color photographic emulsion as claimed in claim 1, wherein said colored coupler of the general formula (III) is a compound of the following structure formula
References Cited (Backward Citations)
US3642485A
Cited
US3649285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |