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US2756149A
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US
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Mordanting basic dyes in photography
Assignee: Eastman Kodak Co
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Filing: 1954-12-17
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Granted: 1956-07-24
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Expires: 1974-12-17
Abstract
No abstract record available.
Inventors
- 👤 Vernon I Saunders
- 👤 Ilmari F Salminen
- 👤 Wilho M Salminen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT CARRYING A HYDROPHILIC ORGANIC COLLOID LAYER CONTAINING A BASIC DYE MORDANTED IN SAID LAYER BY MEANS OF A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
29 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT CARRYING A HYDROPHILIC ORGANIC COLLOID LAYER CONTAINING A BASIC DYE MORDANTED IN SAID LAYER BY MEANS OF A COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2078398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |