US3761267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element containing monodispersed unfogged dye sensitizedsilver halide grains metal ions sensitized internally and the use theeof in reversal process
Assignee: Eastman Kodak Co
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Filing: 1971-03-10
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Granted: 1973-09-25
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Expires: 1991-03-10
Abstract
Abstract IMPROVED PROCESSES ARE DISCLOSED FOR OBTAINING POSITIVE IMAGES IN UNFOGGED, SILVER HALIDE EMULSIONS. IN ONE ASPECT, THE SILVER HALIDE EMULSIONS OF THIS INVENTION COMPRISE SILVER HALIDE GRAINS HAVING FOREIGN METAL IONS AND PREFERABLY POLYVALENT METAL IONS OCCLUDED THEREIN.
Inventors
- 👤 P Gilman
- 👤 R Raleigh
- 👤 J Merrigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:36
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/485; G03C1/48538
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |