US3776738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide emulsions sensitized with a combination of oxazoline or dihydrooxazine cyanine dyes and mercapto or selenol compounds
Assignee: Agfa Gevaert AG
•
Filing: 1972-02-08
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Granted: 1973-12-04
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Expires: 1992-02-08
Abstract
Abstract Light sensitized photographic materials containing trimethine cyanine dyes of the oxazoline and dehydrooxazine series and hypersensitizing additives of mercapto or selenol compounds which contain acid groups.
Inventors
- 👤 H Ohlschlager
- 👤 O Riester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:50
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
18 words
A material as claimed in claim 1 in which the group Z represents a group of the formula
Claim 2
Dependent Claim
27 words
A material as claimed in claim 1 in which the dye (A) is present in the amount of 10 to 1,000 mg per mol of silver halide.
Claim 3
Dependent Claim
27 words
A material as claimed in claim 1 in which the dye (A) is present in an amount of 30 to 300 mg per mol of silver halide.
Claim 4
Dependent Claim
29 words
A material as claimed in claim 1 in which the mercapto or selenol compound is present in an amount of 100 to 10,000 mg per mol of silver halide.
Claim 5
Dependent Claim
27 words
A material as claimed in claim 1 in which the said compound is present in an amount of 300 to 3,000 mg per mol of silver halide.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |