US2768080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrophilic high polymer hydrosols and gelating emulsions
Assignee: Eastman Kodak Co
•
Filing: 1954-02-18
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Granted: 1956-10-23
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Expires: 1974-02-18
Abstract
No abstract record available.
Inventors
- 👤 Richard J Hellmann
- 👤 Jr William F Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; Y; Y10; Y10S; Y10S526/00; Y10S526/93; Y10S526/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PHOTOGRAPHIC ELEMENT COMPRISING A POLYMERIC MATERIAL FORMED BY POLYMERIZING IN AQUEOUS DISPERSION TO FORM A HYDROSOL, AT LEAST 8% OF ACRYLIC ACID, AT LEAST 50% OF A 2-ALKOXYETHYL ACRYLATE SELECTED FROM THE CLASS CONSISTING OF METHOXY, ETHOXY, PROPOXY, BUTOXY, AND METHOXYMETHOXY ETHYL ACRYLATES AND AT LEAST 14% ACRYLONITRILE, GELATIN AND LIGHT-SENSITIVE SILVER HALIDE SALTS.
Claim 2
Dependent Claim
55 words
A PHOTOGRAPHIC ELEMENT COMPRISING A POLYMERIC MATERIAL FORMED BY POLYMERIZING IN AQUEOUS DISPERSION TO FORM A HYDROSOL, AT LEAST 8% OF ACRYLIC ACID, AT LEAST 50% OF A 2-ALKOXYETHYL ACRYLATE SELECTED FROM THE CLASS CONSISTING OF METHOXY, ETHOXY, PROPOXY, BUTOXY, AND METHOXYMETHOXY ETHYL ACRYLATES AND AT LEAST 14% ACRYLONITRILE, GELATIN AND LIGHT-SENSITIVE SILVER HALIDE SALTS.
References Cited (Backward Citations)
US1981102A
Cited
US2006002A
Cited
US2133257A
Cited
US2486241A
Cited
US2446049A
Cited
US2436926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |