US2860984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supersensitized photographic emulsions containing polymethine dyes and ketones
Assignee: Eastman Kodak Co
•
Filing: 1956-05-21
•
Granted: 1958-11-18
•
Expires: 1976-05-21
Abstract
No abstract record available.
Inventors
- 👤 Jean E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:47
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION SENSITIZED WITH A SUPERSENTIZING COMBINATION OF AT LEAST ONE POLYMETHINE DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING THRE GENERAL FORMULAS:
Claim 2
Dependent Claim
26 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION SENSITIZED WITH A SUPERSENTIZING COMBINATION OF AT LEAST ONE POLYMETHINE DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING THRE GENERAL FORMULAS:
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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |