Patent US2828949A successfully refreshed from Google Patents.
Patent US2606832A successfully refreshed from Google Patents.
US2606832A
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US
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Photographic elements having an anchoring substratum composed of a water-insoluble vinylpyridine polymer
Assignee: EIDP Inc
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Filing: 1946-11-27
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Granted: 1952-08-12
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Expires: 1966-11-27
Abstract
No abstract record available.
Inventors
- 👤 Alles Francis Peter
- 👤 Saner William Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:58
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03C1/76; G03C1/91; G03C1/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A LAMINATED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT, A WATER-PERMEABLE ORGANIC COLLOID LAYER ANCHORED TO A SURFACE OF THE SUPPORT BY MEANS OF AN INTERCALATED LAYER COMPOSED OF A WATER-INSOLUBLE VINYLPYRIDINE POLYMER WHICH IS SOLUBLE IN METHANOL AND ETHANOL AND MIXTURES OF SUCH SOLVENTS AND FORMS CLEAR RESIN FILMS, SAID ELEMENT HAVING A LAYER OF A LIGHT-SENSITIVE SILVER HALIDE EMULSION.
Claim 2
Dependent Claim
59 words
A LAMINATED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT, A WATER-PERMEABLE ORGANIC COLLOID LAYER ANCHORED TO A SURFACE OF THE SUPPORT BY MEANS OF AN INTERCALATED LAYER COMPOSED OF A WATER-INSOLUBLE VINYLPYRIDINE POLYMER WHICH IS SOLUBLE IN METHANOL AND ETHANOL AND MIXTURES OF SUCH SOLVENTS AND FORMS CLEAR RESIN FILMS, SAID ELEMENT HAVING A LAYER OF A LIGHT-SENSITIVE SILVER HALIDE EMULSION.
References Cited (Backward Citations)
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US2133110A
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US2400989A
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US2397865A
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US2448542A
Cited
US2448507A
Cited
US2448552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |