US3767651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel cyanine dyes derived from 1,2-diphenylindoles
Assignee: Eastman Kodak Co
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Filing: 1971-03-22
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Granted: 1973-10-23
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Expires: 1991-03-22
Abstract
Abstract NOVEL CYANINE DYES ARE PROVIDED WHICH FEATURE A 1,2DIARYLINDOLE NUCLEUS. LIGHT SENSITIVE SILVER HALIDE EMULSIONS CONTAINING THESE DYES ARE ALSO PROVIDED.
Inventors
- 👤 D Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:35
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/485; G03C1/48515; G03C1/48523; G03C1/4853; C; C09; C09B; C09B23/00; C09B23/10; C09B23/105
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |