US2887378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide emulsions containing thiol compounds
Assignee: Eastman Kodak Co
•
Filing: 1957-04-29
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Granted: 1959-05-19
•
Expires: 1977-04-29
Abstract
No abstract record available.
Inventors
- 👤 Williams Leslie Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:37
CPC Classifications
C; C07; C07D; C07D513/00; C07D513/02; C07D513/04; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346; Y; Y10; Y10S; Y10S430/00; Y10S430/166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A PHOATOGRAPHIC SILVER HALIDE EMULSION CONTAINING A COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA;
Claim 2
Dependent Claim
17 words
A PHOATOGRAPHIC SILVER HALIDE EMULSION CONTAINING A COMPOUND SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA;
References Cited (Backward Citations)
US2566658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |