Patent US2772166A successfully refreshed from Google Patents.
US2772166A
Expired / Lapsed
US
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Hydrophilic compositions and their preparation
Assignee: Eastman Kodak Co
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Filing: 1953-02-11
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Granted: 1956-11-27
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Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 Jr William F Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:15
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; Y; Y10; Y10S; Y10S526/00; Y10S526/93
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
A PHOTOGRAPHIC EMULSION COMPOSITION WHICH COMPRISES SILVER HALIDE CARRIED BY A COMPOSITION COMPRISING AN AQUEOUS COLLOIDAL DISPERSION OF PHOTOGRAPHIC GRADE GELATIN AND THE HYDROSOL RESULTING FROM THE EMULSION POLYMERIZATION OF A MIXTURE, THE MAJOR INGREDIENTS OF WHICH ARE (A) 1 PART OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF STYRENE, ACRYLONITRILE, ALKYLATED STYRENES, HALOGENATED STYRENES, CYANO STYRENES, NITRO STYRENES, AMINO STYRENES, HALOGENATED ACRYLONITRILES, AND VINYLIDENE CYANIDE, (B) 11/2-5 PARTS OF AN ESTER SELECTED FROM THE GROUP CONSISTING OF THE ALKYL ACRYLATES, THE ALKYLS OF WHICH ARE OF 2-10 CARBON ATOMS AND THE ALKYL METHACRYLATES OF ALKYLS OF 4-10 CARBON ATOMS AND (C) AT LEAST 1% AND NOT MORE THAN APPROXIMATELY 8% OF ACRYLIC ACID, BASED ON THE TOTAL WEIGHT OF MONOMER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |