Patent US3434837A successfully refreshed from Google Patents.
US3434837A
Expired / Lapsed
US
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Photographic element
Assignee: Eastman Kodak Co
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Filing: 1964-06-05
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Granted: 1969-03-25
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Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Edward B Knott
- 👤 Miroslav V Mijovic
- 👤 David George Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:37
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/815; G03C1/8155; C; C25; C25D; C25D13/00; Y; Y10; Y10S; Y10S430/00; Y10S430/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
PHOTOGRAPHIC PRING MATERIAL COMPRISING A SUPPORT HAVING A WHITE SURFACE, A PLURALITY OF COATINGS OVER SAID WHITE SURFACE WHICH COATINGS INCLUDES LIGHT SENSITIVE COATINGS INDIVIDUALLY SENSITIVE TO BLUE, GREEN AND RED REGIONS OF THE SPECTRUM, THE RED SENSITIVE COATING BEING THE OUTERMOST LIGHT SENSITIVE COATING, SAID RED SENSITIVE COATING CONTAINING A FLUORESCENT AGENT WHICH HAS STRONG ABSORPTION OF RADIATION IN THE ULTRAVIOLET REGION OF THE SPECTRUM, HIGH FLUORESCENT EMISSION IN THE BLUE REGION OF THE SPECTRUM AND WHICH IS SUBSTANTIALLY INSOLUBLE IN WATER AND, A PHOTOGRAPHIC COUPLER IN SAID OUTERMOST COATING WHICH FORMS A DYE WHICH EXTINGUISHES THE FLUORESCENCE OF THE FLUORESCENT AGENT IN THOSE AREAS IN WHICH THE DYE IS PRODUCED.
Claim 2
Dependent Claim
112 words
PHOTOGRAPHIC PRING MATERIAL COMPRISING A SUPPORT HAVING A WHITE SURFACE, A PLURALITY OF COATINGS OVER SAID WHITE SURFACE WHICH COATINGS INCLUDES LIGHT SENSITIVE COATINGS INDIVIDUALLY SENSITIVE TO BLUE, GREEN AND RED REGIONS OF THE SPECTRUM, THE RED SENSITIVE COATING BEING THE OUTERMOST LIGHT SENSITIVE COATING, SAID RED SENSITIVE COATING CONTAINING A FLUORESCENT AGENT WHICH HAS STRONG ABSORPTION OF RADIATION IN THE ULTRAVIOLET REGION OF THE SPECTRUM, HIGH FLUORESCENT EMISSION IN THE BLUE REGION OF THE SPECTRUM AND WHICH IS SUBSTANTIALLY INSOLUBLE IN WATER AND, A PHOTOGRAPHIC COUPLER IN SAID OUTERMOST COATING WHICH FORMS A DYE WHICH EXTINGUISHES THE FLUORESCENCE OF THE FLUORESCENT AGENT IN THOSE AREAS IN WHICH THE DYE IS PRODUCED.
References Cited (Backward Citations)
US2322027A
Cited
US2639990A
Cited
US3047390A
Cited
US2956879A
Cited
DE1150274B
Cited
US3244524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |