Patent US2592303A successfully refreshed from Google Patents.
US2592303A
Expired / Lapsed
US
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Thio-bis-acylamino pyrazolone couplers for color photography
Assignee: Eastman Kodak Co
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Filing: 1948-11-12
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Granted: 1952-04-08
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Expires: 1968-11-12
Abstract
No abstract record available.
Inventors
- 👤 Loria Anthony
- 👤 Paul W Vittum
- 👤 Weissberger Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:16
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/38; G03C7/384
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
A PHOTOGRAPHIC EMULSION FOR FORMING COLORED IMAGES COMPRISING A WATER-PERMEABLE, COLLOIDAL CARRIER CONTAINING A SENSITIVE SILVER HALIDE. AND A COUPLER COMPOUND HAVING THE 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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |