Patent US3265501A successfully refreshed from Google Patents.
US3265501A
Expired / Lapsed
US
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Water-swellable colloidal magnesium aluminum silicate photographic composition
Assignee: Eastman Kodak Co
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Filing: 1960-12-23
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Granted: 1966-08-09
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Gerald J Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:44
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/261; G03C5/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF FIXING A PHOTO-EXPOSED AND DEVELOPED SILVER HALIDE EMULSION LAYER COMPRISING IMBIBING IN SAID SILVER HALIDE EMULSION LAYER A VISCOUS PHOTOGRAPHIC SILVER HALIDE PROCESSING SOLUTION COMPRISING (A) A SILVER HALIDE FIXING AGENT SELECTED FROM THE CLASS CONSISTING OF ALKAN METAL THIOSULFATES, ALKALI METAL THIOCYANATES, AMMONIUM THIOSULFATE AND AMMONIUM THIOCYANATE AND (B) A WATER-SWELLABLE, COLLOIDAL MAGNESIUM ALUMINUM SILICATE BELONGING TO THE MONTMORILLONITE GROUP OF MINERALS HAVING AT LEAST 90% MAGNESIUM ALUMINUM SILICATE CONTENT, IN AN AMOUNT FROM ABOUT 0.5 PERCENT TO ABOUT 5.0 PERCENT OF THE TOTAL WEIGHT OF THE SOLUTION.
Claim 2
Independent Claim
92 words
A METHOD OF FIXING A PHOTO-EXPOSED AND DEVELOPED SILVER HALIDE EMULSION LAYER COMPRISING IMBIBING IN SAID SILVER HALIDE EMULSION LAYER A VISCOUS PHOTOGRAPHIC SILVER HALIDE PROCESSING SOLUTION COMPRISING (A) A SILVER HALIDE FIXING AGENT SELECTED FROM THE CLASS CONSISTING OF ALKAN METAL THIOSULFATES, ALKALI METAL THIOCYANATES, AMMONIUM THIOSULFATE AND AMMONIUM THIOCYANATE AND (B) A WATER-SWELLABLE, COLLOIDAL MAGNESIUM ALUMINUM SILICATE BELONGING TO THE MONTMORILLONITE GROUP OF MINERALS HAVING AT LEAST 90% MAGNESIUM ALUMINUM SILICATE CONTENT, IN AN AMOUNT FROM ABOUT 0.5 PERCENT TO ABOUT 5.0 PERCENT OF THE TOTAL WEIGHT OF THE SOLUTION.
References Cited (Backward Citations)
US1277048A
Cited
US2616807A
Cited
US2523204A
Cited
US2635048A
Cited
US2610951A
Cited
US2962377A
Cited
US2834676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |