US3676147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of spectrally sensitizing photographic silver halide emulsions
Assignee: Eastman Kodak Co
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Filing: 1969-11-28
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Granted: 1972-07-11
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Expires: 1989-11-28
Abstract
Abstract LIGHT SENSITIVE SILIVER HALIDE IS SPECTRALLY SENSITIZED BY DISPERSING A SUBSTANTIALLY WATER-INSOLUBLE PHOTOGRAPHIC SPECTRAL SENSITIZING DYE INTO A WATER-SOLUBLE ORGAINC LIQUID WITHOUT DISSOLVING THE DYE, AND INCORPORATING THE DISPERSION INOT A LIQUID PHOTOGRAPHIC SILVER HALIDE EMULSION. NOVEL DISPERSIONS OF DYES ARE ALSO PROVIDED.
Inventors
- 👤 Simone J Boyer
- 👤 Roger Caridi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:13
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/102
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |