US3380828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistain agents for spectrally sensitized silver halide photographic elements
Assignee: Eastman Kodak Co
•
Filing: 1965-08-02
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Granted: 1968-04-30
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Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Theodore J Kitze
- 👤 Jr William J Rosecrants
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:23
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/32; G03C1/30; G03C1/33; G03C1/34; G03C1/76; G03C1/95; G03C5/00; G03C5/26; G03C5/38; G03C5/39; Y; Y10; Y10S; Y10S430/00; Y10S430/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A RAPID ACCESS STABILIZATION PROCESS FOR THE FORMATION OF A STABLE IMAGE IN A PHOTOGRAPHIC SILVER HALIDE MATERIAL WHICH COMPRISES DEVELOPING AN EXPOSED SILVER HALIDE PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A SPECTRALLY-SENSITIZED SILVER HALIDE EMULSION, AT LEAST ONE SILVER HALIDE DEVELOPING AGENT, AND A 1,3-DIHYDROXY CARBOCYLIC COMPOUND ANTISTAIN AGENT, BY TREATMENT WITH AN ALKALINE SOLUTION, AND IMMEDIATELY THEREAFTER STABILIZING SAID EMULSION WITH A SOLUTION COMPRISING AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, ALKALINE EARTH AND AMMONIUM THIOCYANATES AND THIOSULFATES, THIOUREAS AND THIOGLYCOLLIC ACID AND DRYING SAID ELEMENT WITHOUT FURTHER TREATMENT.
Claim 2
Dependent Claim
97 words
A RAPID ACCESS STABILIZATION PROCESS FOR THE FORMATION OF A STABLE IMAGE IN A PHOTOGRAPHIC SILVER HALIDE MATERIAL WHICH COMPRISES DEVELOPING AN EXPOSED SILVER HALIDE PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A SPECTRALLY-SENSITIZED SILVER HALIDE EMULSION, AT LEAST ONE SILVER HALIDE DEVELOPING AGENT, AND A 1,3-DIHYDROXY CARBOCYLIC COMPOUND ANTISTAIN AGENT, BY TREATMENT WITH AN ALKALINE SOLUTION, AND IMMEDIATELY THEREAFTER STABILIZING SAID EMULSION WITH A SOLUTION COMPRISING AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, ALKALINE EARTH AND AMMONIUM THIOCYANATES AND THIOSULFATES, THIOUREAS AND THIOGLYCOLLIC ACID AND DRYING SAID ELEMENT WITHOUT FURTHER TREATMENT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |