US2518698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical sensitization of photographic emulsions
Assignee: Eastman Kodak Co
•
Filing: 1948-11-18
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Granted: 1950-08-15
•
Expires: 1968-11-18
Abstract
No abstract record available.
Inventors
- 👤 Wesley G Lowe
- 👤 Jean E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:39
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A LIGHT-SENSITIVE PHOTOGRAPH EMULSION COMPRISING SILVER HALIDE AND A POLYAMINE SENSITIZING AGENT HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
16 words
A LIGHT-SENSITIVE PHOTOGRAPH EMULSION COMPRISING SILVER HALIDE AND A POLYAMINE SENSITIZING AGENT HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
GB496049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |