US3057725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted disulfides as antifoggants for silver halide emulsions
Assignee: Eastman Kodak Co
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Filing: 1959-07-17
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Granted: 1962-10-09
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Expires: 1979-07-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Herz
- 👤 Norman W Kalenda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:15
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION STABILIZED WITH A WATER-SOLUBLE COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
23 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION STABILIZED WITH A WATER-SOLUBLE COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |