Patent US2753264A successfully refreshed from Google Patents.
US2753264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide emulsions of polyvinyl acetal polymers
Assignee: EIDP Inc
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Filing: 1954-07-26
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Granted: 1956-07-03
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Expires: 1974-07-26
Abstract
No abstract record available.
Inventors
- 👤 Mochel Walter Edwin
- 👤 Weaver Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A DISPERSION OF LIGHT-SENSITIVE SILVER HALIDE IN A POLYVINYL ACETAL WHICH CONTAINS RECURRING INTRALINEAR -CH2CHOH- GROUPS AND GROUPS OF THE FORMULA:
Claim 2
Dependent Claim
21 words
A DISPERSION OF LIGHT-SENSITIVE SILVER HALIDE IN A POLYVINYL ACETAL WHICH CONTAINS RECURRING INTRALINEAR -CH2CHOH- GROUPS AND GROUPS OF THE FORMULA:
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) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |