US3702767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrally sensitized light sensitive material
Assignee: Agfa Gevaert AG
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Filing: 1971-01-04
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Granted: 1972-11-14
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Expires: 1991-01-04
Abstract
Abstract CYANINE AND MEROCYANINE DYES WHICH ARE DERIVED FROM 5-OXO-5,6,7,8-TETRYDROQUINOLINE ARE GOOD SPECTRAL SENSITIZERS FOR SILVER HALIDE EMULSION LAYERS AND LAYERS CONTAINING PHOTOCONDUCTIVE ZINCE OXIDE IN AN INSULATING BINDER.
Inventors
- 👤 Hans Ohlschlager
- 👤 Oskar Riester
- 👤 Heinz Meckl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:27
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/0008; C09B23/0025; C09B23/005; C09B23/0058; C09B23/0075; C09B23/02; C09B23/04; C09B23/06; C09B23/10; C09B23/105; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0644; G03G5/0661; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067; G03G5/0672; G03G5/0674
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |