Patent US2755186A successfully refreshed from Google Patents.
US2755186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic films
Assignee: EIDP Inc
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Filing: 1954-07-19
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Granted: 1956-07-17
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Expires: 1974-07-19
Abstract
No abstract record available.
Inventors
- 👤 Saner William Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:30
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/835
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT WHICH TRANSMITS LIGHT, A LIGHT-SENSITIVE SILVER HALIDE LAYER ON ONE SURFACE OF THE SUPPORT, AND AN ANTI-HALATION LAYER ON THE OTHER SURFACE OF THE SUPPORT, COMPRISING A POLYMERIC MATERIAL TAKEN FROM THE CLASS CONSISTING OF POLY(VINYL ACETATE CO ALLYLOXYACETIC ACID) AND ITS WATER-SOLUBLE SALTS AND BASIC DYE SALTS, SAID LAYER HAVING DISPERSED THERETHROUGH AN ANTI-HALATION MATERIAL TAKEN FROM THE GROUP CONSISTING OF DYES AND PIGMENTS.
Claim 2
Dependent Claim
71 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT WHICH TRANSMITS LIGHT, A LIGHT-SENSITIVE SILVER HALIDE LAYER ON ONE SURFACE OF THE SUPPORT, AND AN ANTI-HALATION LAYER ON THE OTHER SURFACE OF THE SUPPORT, COMPRISING A POLYMERIC MATERIAL TAKEN FROM THE CLASS CONSISTING OF POLY(VINYL ACETATE CO ALLYLOXYACETIC ACID) AND ITS WATER-SOLUBLE SALTS AND BASIC DYE SALTS, SAID LAYER HAVING DISPERSED THERETHROUGH AN ANTI-HALATION MATERIAL TAKEN FROM THE GROUP CONSISTING OF DYES AND PIGMENTS.
References Cited (Backward Citations)
US2606834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |