Patent US3600167A successfully refreshed from Google Patents.
US3600167A
Expired / Lapsed
US
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Silver halide layered photographic element of different light sensitive layers
Assignee: Eastman Kodak Co
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Filing: 1968-11-04
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Granted: 1971-08-17
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Expires: 1988-11-04
Abstract
Abstract THIS INVENTION RELATES TO A PROCESS FOR PRODUCING A PHOTOGRAPHIC ELEMENT COMPRISING COATING A SILVER HALIDE LAYER WITH A PAG OF BELOW ABOUT 8.6 AND COATING ADJACENT SAID LAYER A LAYER COMPRISING A WATER-SOLUBLE HALIDE CONTAINING SUFFICIENT HALIDE IONS SUCH THAT THE PAG OF THE FINAL EMULSION LAYERS OF THE ELEMENTS IS WITHIN THE RANGE OF ABOUT 9.0 TO 10.0. IN ONE ASPECT, THIS INVENTION RELATES TO A MEANS FOR COATING A BLENDED, FINE GRAIN, DIRECTPOSITIVE EMULSION TO ACHIEVE IMPROVED PHOTOGRAPHIC PROPERTIES.
Inventors
- 👤 Malcolm L Judd
- 👤 Fred W Spangler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:14
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/485; G03C1/48515; G03C1/46
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |