Patent US3586505A successfully refreshed from Google Patents.
US3586505A
Expired / Lapsed
US
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Sensitizing silver halide emulsion layers
Assignee: Eastman Kodak Co
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Filing: 1966-12-14
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Granted: 1971-06-22
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Expires: 1986-12-14
Abstract
Abstract THIS INVENTION RELATES TO METHODS OF SENSITIZING SILVER HALIDE LAYERS, PHOTOGRAPHIC ELEMENTS COMPRISING SENSITIZERS WHICH CAN BE ACTIVATED AND TO PROCESSOS OF FORMING POSITIVE IMAGES. IN ONE ASPECT, A POSITIVE IMAGE IS FORMED IN A PROCESS COMPRISING (1) IMAGEWISE EXPOSING A SILVER HALIDE LAYER COMPRISING AN INTERNAL IMAGE EMULSION, (2) SURFACE-SENSITIZING THE INTERNAL IMAGE EMULSION, (3) FLASH EXPOSURE OF THE LAYER AND (4) DEVELOPING THE SILVER HALIDE LAYER.
Inventors
- 👤 Michael Ridgway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:29
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/485
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |