US2588765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricated photographic element containing a mixture of higher fatty alcohols and higher fatty acids
Assignee: Gevaert Photo Producten NV
•
Filing: 1946-04-23
•
Granted: 1952-03-11
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Expires: 1966-04-23
Abstract
No abstract record available.
Inventors
- 👤 Willem P M J Robijns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:31
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/81; Y; Y10; Y10S; Y10S430/00; Y10S430/135; Y10S430/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PHOTOGRAPHIC MATERIAL COMPRISING A SUPPORT COATED WITH SEVERAL COLLOID LAYERS OF WHICH AT LEAST ONE LAYER CONTAINS A SILVER HALIDE, AT LEAST ONE OUTER LAYER OF SAID COLLOID LAYERS CONTAINING A HOMOGENEOUS SUSPENSION IN WATER OF AT LEAST ONE COMPLETELY SAPONIFIED ESTER OF A SATURATED HIGHER FATTY ALCOHOL AND A SATURATED HIGHER FATTY ACID IN THE PRESENCE OF BOTH A BASE AND ITS SALTS.
Claim 2
Dependent Claim
65 words
A PHOTOGRAPHIC MATERIAL COMPRISING A SUPPORT COATED WITH SEVERAL COLLOID LAYERS OF WHICH AT LEAST ONE LAYER CONTAINS A SILVER HALIDE, AT LEAST ONE OUTER LAYER OF SAID COLLOID LAYERS CONTAINING A HOMOGENEOUS SUSPENSION IN WATER OF AT LEAST ONE COMPLETELY SAPONIFIED ESTER OF A SATURATED HIGHER FATTY ALCOHOL AND A SATURATED HIGHER FATTY ACID IN THE PRESENCE OF BOTH A BASE AND ITS SALTS.
References Cited (Backward Citations)
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GB191326788A
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US1697858A
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US2221873A
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US2304939A
Cited
US2272191A
Cited
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Cited
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Cited
US2430585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |