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US3758465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trinuclear complex merocyanine dyes
Assignee: Eastman Kodak Co
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Filing: 1970-06-01
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Granted: 1973-09-11
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Expires: 1990-06-01
Abstract
Abstract TRINUCLEAR COMPLEX MEROCYANINE DYES DERIVED FROM 2MIDAZOLIN-4-ONES, 2-IMIDAZOLIN-4-THIONES AND 2-IMIDAZOLIN4-SELENONES ARE USED ADVANTAGEOUSLY AS SPECTRAL SENSITIZING DYES IN PHOTOGRAPHIC IMAGE-FORMING MATERIALS.
Inventors
- 👤 P Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:28
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/0075
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |