Patent US2161335A successfully refreshed from Google Patents.
Patent US3591382A successfully refreshed from Google Patents.
US3591382A
Expired / Lapsed
US
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Use of fine grain emulsion with coarse grain emulsion to reduce image spread
Assignee: Eastman Kodak Co
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Filing: 1968-05-15
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Granted: 1971-07-06
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Expires: 1988-05-15
Abstract
Abstract PHOTOGRAPHIC ELEMENTS HAVING COATED ON ONE SIDE OF A SUPPORT: (1) AN ANTIHALATION LAYER; (2) A FINE GRAIN SILVER HALIDE EMULSION LAYER; AND (3) A COARSE GRAIN SILVER HALIDE EMULSION IMAGE RECORDING LAYER WHICH PREFERABLY CONTAINS A PHOTOGRAPHIC COLOR-FORMER, EXHIBIT LOW IMAGE SPREAD.
Inventors
- 👤 Allan G Millikan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:21
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/46; G03C1/76; G03C1/825; G03C7/00; G03C7/30; G03C7/3029; G03C2007/3034
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |