US3132943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid processing of photographic materials including the use of phosphate ions as anti-staining agents
Assignee: Eastman Kodak Co
•
Filing: 1960-09-29
•
Granted: 1964-05-12
•
Expires: 1980-09-29
Abstract
No abstract record available.
Inventors
- 👤 Smith Eric Thomas
- 👤 Stevens Guy William Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:37
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C5/38; G03C5/39; Y; Y10; Y10S; Y10S430/00; Y10S430/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A RAPID PROCESS FOR PRODUCING A STABLE VISIBLE IMAGE IN A PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER CONTAINING A LATENT IMAGE COMPRISING DEVELOPING SAID LAYER IN A PHOTOGRAPHIC SILVER HALIDE DEVELOPING SOLUTION, AND IMMEDIATELY THEREAFTER STABILIZING SAID LAYER BY APPLYING AN AQUEOUS THIOCYANATE SOLUTION WITHOUT SUBSTANTIAL FIXATION AND IMBIBING INTO SAID LAYER AN AQUEOUS SOLUTION CONTAINING PHOSPHATE ION, AND DRYING SAID LAYER WITHOUT FURTHER TREATMENT.
Claim 2
Dependent Claim
64 words
A RAPID PROCESS FOR PRODUCING A STABLE VISIBLE IMAGE IN A PHOTOGRAPHIC SILVER HALIDE EMULSION LAYER CONTAINING A LATENT IMAGE COMPRISING DEVELOPING SAID LAYER IN A PHOTOGRAPHIC SILVER HALIDE DEVELOPING SOLUTION, AND IMMEDIATELY THEREAFTER STABILIZING SAID LAYER BY APPLYING AN AQUEOUS THIOCYANATE SOLUTION WITHOUT SUBSTANTIAL FIXATION AND IMBIBING INTO SAID LAYER AN AQUEOUS SOLUTION CONTAINING PHOSPHATE ION, AND DRYING SAID LAYER WITHOUT FURTHER TREATMENT.
References Cited (Backward Citations)
US2126349A
Cited
US2203903A
Cited
US2409107A
Cited
GB629608A
Cited
US2475134A
Cited
US2515121A
Cited
US2614927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |