US2965486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymethine sensitizing dyes and photographic emulsions
Assignee: Eastman Kodak Co
•
Filing: 1958-06-02
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Granted: 1960-12-20
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Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Leslie G S Brooker
- 👤 Webster Frank Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:41
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; C; C09; C09B; C09B23/00; C09B23/0075; C09B23/02; C09B23/14; C09B23/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION SENSITIZED WITH A POLYMETHINE DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
19 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION SENSITIZED WITH A POLYMETHINE DYE SELECTED FROM 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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |