US2692829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions sensitized with merocyanine dyes containing a 5(4)-thiazolone nucleus
Assignee: Eastman Kodak Co
•
Filing: 1951-02-17
•
Granted: 1954-10-26
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Expires: 1971-02-17
Abstract
No abstract record available.
Inventors
- 👤 Aubert Per
- 👤 Edward B Knott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:25
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/22; C; C09; C09B; C09B23/00; C09B23/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION SENSITIZED WITH AT LEAST ONE MEROCYANINE DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA
Claim 2
Dependent Claim
21 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION SENSITIZED WITH AT LEAST ONE MEROCYANINE DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |