Patent US2572104A successfully refreshed from Google Patents.
Patent US3558320A successfully refreshed from Google Patents.
US3558320A
Expired / Lapsed
US
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Direct positive silver halide emulsions containing 3 - nitrosoindole cyanine dyes
Assignee: Eastman Kodak Co
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Filing: 1967-08-14
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Granted: 1971-01-26
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Expires: 1987-08-14
Abstract
Abstract DIRECT POSITIVE EMULSIONS ARE SPECTRALLY SENSITIZED WITH CYANINE DYES DERIVED FROM 1,2-DISUBSTITUTED 3-NITROSOINDOLES.
Inventors
- 👤 Leslie G S Brooker
- 👤 John D Mee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:02
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/485; G03C1/48515; G03C1/48523; G03C1/4853; C; C09; C09B; C09B55/00; C09B55/002; C09B55/003; C09B55/004; Y; Y10; Y10S; Y10S430/00; Y10S430/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |