US3615546A
Expired / Lapsed
US
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Photographic elements containing colored colloid layers
Assignee: Agfa Gevaert NV
•
Filing: 1968-05-31
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Granted: 1971-10-26
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Expires: 1988-05-31
Abstract
Abstract A light-sensitive photographic material including a support and a light-sensitive layer and/or a water-permeable colloidal layer containing a dye obtained by condensation of paraaminobenzaldehydes or cinnamaldehydes with 1-phenyl-2-pyrazolin5-ones which dyes are characterized by the presence in the 1phenyl group of an arylsulphonyl substituent and by the presence in the dyestuff molecule of at least one carboxyl and/or sulpho group in acid or salt form are described. The photographic materials have improved light-screening properties.
Inventors
- 👤 Henri Depoorter
- 👤 Marcel Jan Libeer
- 👤 Guy Alfred Rillaers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:45
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; C; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C09B23/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
The light-sensitive element of claim 1 wherein Y represents the group wherein each of X and X'' (the same or different) stands for hydrogen, halogen, cyano, carboxyl, sulfo, an alkoxy group, an alkylthio group, an alkoxycarbonyl group, an aryloxycarbonyl group, an amino group, a quaternary ammonium group, or the group -SO2R3 wherein R3 stands for an alkyl group, an aralkyl group or an aryl group and each of n and n'' stands for 1, 2 or 3.
Claim 2
Dependent Claim
24 words
A light-sensitive element comprising a support, a light-sensitive material, and at least one water permeable colloid layer containing a dye corresponding to the formula
Claim 3
Dependent Claim
78 words
A light-sensitive element according to claim 3 wherein Y represents the group wherein each of X and X'' (the same or different) stands for hydrogen, halogen, cyano, carboxyl, sulfo, an alkoxy group, an alkylthio group, an alkoxycarbonyl group, an aryloxycarbonyl group, an amino group, a quaternary ammonium group, or the group -SO2R3 wherein R3 stands for an alkyl group, an aralkyl group or an aryl group and each of n and n'' stands for 1, 2 or 3.
Claim 4
Dependent Claim
40 words
The light-sensitive element according to claim 3 wherein the said water-permeable colloid layer containing the said dye is an antihalation layer coated either on the back of the support or between the support and a light-sensitive silver halide emulsion layer.
Claim 5
Dependent Claim
16 words
The light-sensitive element according to claim 3 including at least one light-sensitive silver halide emulsion layer.
Claim 6
Dependent Claim
31 words
A light-sensitive element according to claim 3 wherein said layer is part of a light-sensitive photographic multilayer silver halide color material and functions as a filter layer or a antihalation layer.
Claim 7
Dependent Claim
24 words
A light-sensitive element according to claim 3 wherein said layer is a light-sensitive silver-halide emulsion layer forming part of a photographic silver halide material.
Claim 8
Dependent Claim
18 words
A light-sensitive element according to claim 3 wherein the light-sensitive material is included in said water-permeable colloid layer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |