US3615512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic compositions and process for stabilizing image records with said compositions
Assignee: Eastman Kodak Co
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Filing: 1968-10-16
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Granted: 1971-10-26
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Expires: 1988-10-16
Abstract
Abstract Photographic compositions comprising (1) a silver halide developing agent, (2) a water-soluble silver halide solvent and (3) a weak silver halide complexing agent. In one embodiment the above composition can be used to rapidly develop or stabilize image records in silver halide emulsions which contain addenda which lower the rate of dissolution of silver halide in a potassium thiocyanate solution.
Inventors
- 👤 Jacques Ducrocq
- 👤 Daniel Gallois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:31
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/38; G03C5/383
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
22 words
A photographic bath according to claim 1 wherein said weak silver halide complexing agent comprises at least one group or halogen group.
Claim 2
Dependent Claim
15 words
A photographic bath according to claim 1 wherein said silver halide solvent is potassium thiocyanate.
Claim 3
Dependent Claim
18 words
A photographic bath according to claim 1 wherein said weak silver halide complexing agent is an aromatic compound.
Claim 4
Dependent Claim
19 words
A photographic bath according to claim 1 wherein said weak silver halide complexing agent is a halogenated organic compound.
Claim 5
Dependent Claim
18 words
A photographic bath according to claim 1 wherein said weak silver halide complexing agent is an organic thioether.
Claim 6
Dependent Claim
20 words
A photographic bath according to claim 6 wherein said organic thioether comprises at least one moiety of the formula (-O-CH2-CH2-S-).
Claim 7
Dependent Claim
13 words
A photographic bath according to claim 1 wherein said developing agent comprises 1-phenyl-3-pyrazolidone/hydroquinone.
Claim 8
Dependent Claim
14 words
A photographic bath according to claim 1 wherein said developing agent comprises 1-phenyl-3-pyrazolidone/ascorbic acid.
Claim 9
Dependent Claim
19 words
A photographic bath according to claim 1 wherein said weak silver complexing agent comprises at least two ethenic groups.
Claim 10
Dependent Claim
17 words
A photographic bath according to claim 1 wherein said wEak silver complexing agent contains a halogen group.
Claim 11
Dependent Claim
18 words
A photographic bath according to claim 11 wherein said weak silver complexing agent further contains an ethenic group.
Claim 12
Dependent Claim
18 words
A photographic bath according to claim 1 wherein said weak complexing agent comprises at least three ethenic groups.
Claim 13
Dependent Claim
11 words
A photographic bath according to claim 1 further comprising a carbohydrate.
Claim 14
Dependent Claim
15 words
A photographic bath according to claim 1 wherein said weak silver complexing agent is benzylamine.
Claim 15
Dependent Claim
19 words
A photographic composition according to claim 1 wherein said weak silver complexing agent is substantially free of mercaptan groups.
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 |