Patent US2566167A successfully refreshed from Google Patents.
US2566167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide emulsion supersensitized with a benzimidazole base
Assignee: Eastman Kodak Co
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Filing: 1946-04-20
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Granted: 1951-08-28
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Expires: 1966-04-20
Abstract
No abstract record available.
Inventors
- 👤 Burt H Carroll
- 👤 Spence John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:23
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION SELECTED FROM THE GROUP CONSISTING OF SILVER CHLOROBROMIDE, SILVER BROMIDE AND SILVER BROMIODIDE DEVELOPING-OUT EMULSIONS SPECTRALLY SENSITIZED WITH A SENSITIZING CYANINE DYE AND CONTAINING, AS A SUPERSENSITIZER, A BENZIMIDAZOLE BASE SELECTED FROM THE GROUP CONSISTING OF BENZIMIDAZOLE AND BENZIMIDAZOLE CONTAINING A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF HALOGEN ATOMS, ALKYL GROUPS, ALKOXYL GROUPS, HYDROXYLAKYL GROUPS, ARYL GROUPS CONTAINING ONLY CARBON AND HYDROGEN ATOMS, ARYLOXYL GROUPS IN WHICH THE ARYL PORTION CONTAINS ONLY CARBON AND HYDROGEN ATOMS, ALKYLMERCAPTO GROUPS, ARYLMERCAPTO GROUPS IN WHICH THE ARYL PORTION CONTAINS ONLY CARBON AND HYDROGEN ATOMS, ACYL GROUPS CONTAINING ONLY CARBON AND HYDROGEN ATOMS PLUS ONE OXYGEN ATOM, AND ACYLOXYL GROUPS CONTAINING ONLY CARBON AND HYDROGEN ATOMS PLUS TWO OXYGEN ATOMS.
Claim 2
Dependent Claim
122 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION SELECTED FROM THE GROUP CONSISTING OF SILVER CHLOROBROMIDE, SILVER BROMIDE AND SILVER BROMIODIDE DEVELOPING-OUT EMULSIONS SPECTRALLY SENSITIZED WITH A SENSITIZING CYANINE DYE AND CONTAINING, AS A SUPERSENSITIZER, A BENZIMIDAZOLE BASE SELECTED FROM THE GROUP CONSISTING OF BENZIMIDAZOLE AND BENZIMIDAZOLE CONTAINING A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF HALOGEN ATOMS, ALKYL GROUPS, ALKOXYL GROUPS, HYDROXYLAKYL GROUPS, ARYL GROUPS CONTAINING ONLY CARBON AND HYDROGEN ATOMS, ARYLOXYL GROUPS IN WHICH THE ARYL PORTION CONTAINS ONLY CARBON AND HYDROGEN ATOMS, ALKYLMERCAPTO GROUPS, ARYLMERCAPTO GROUPS IN WHICH THE ARYL PORTION CONTAINS ONLY CARBON AND HYDROGEN ATOMS, ACYL GROUPS CONTAINING ONLY CARBON AND HYDROGEN ATOMS PLUS ONE OXYGEN ATOM, AND ACYLOXYL GROUPS CONTAINING ONLY CARBON AND HYDROGEN ATOMS PLUS TWO OXYGEN ATOMS.
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) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |