Patent US3567452A successfully refreshed from Google Patents.
US3567452A
Expired / Lapsed
US
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Photographic element with polymeric film base
Assignee: EIDP Inc
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Filing: 1968-05-07
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Granted: 1971-03-02
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Expires: 1988-05-07
Abstract
Abstract A FILM ELEMENT COMPRISING A DIMENSIONALLY STABLE HYDROPHOBIC MACROMOLECULAR ORGANIC POLYMER FILM BASE BEARING ON AT LEAST ONE SURFACE A NON-TACKY LAYER OF A MIXTURE OF A VINYLIDENE CHLORIDE-ALKYL ACRYLATE-ITACONIC ACID TERPOLYMER AND A POLYMER OF ETHYL ARCYLATE OR METHACRYLATE AND A CROSS-LINKING DI-ETHENYL OR DI-PROPENYL MONOMER SUBSEQUENTLY FORMED IN THE PRESENCE OF THE TERPOLYMER. AQUEOUS COATING DISPERSIONS CONTAINING THE MIXTURE OF TERPOLYMER AND CROSS-LINKED POLYMER. PHOTOGRAPHIC ELEEMTNS HAVING A WATER-PERMEABLE COLLOID SILVER HALIDE LAYER ON A SUPPORT COATED FIRST WITH THE NON-TACKY LAYER THEN OVERCOATED WITH GELATIN.
Inventors
- 👤 Stokes Smith Rawlins Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:36
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; C; C08; C08F; C08F259/00; C08F259/02; C08F259/06; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/08
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |