Patent US2808330A successfully refreshed from Google Patents.
US2808330A
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Photographic elements containing thiazolidine derivatives
Assignee: Eastman Kodak Co
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Filing: 1952-10-31
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Granted: 1957-10-01
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Expires: 1972-10-31
Abstract
No abstract record available.
Inventors
- 👤 George W Sawdey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:38
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; G; G03; G03C; G03C1/00; G03C1/76; G03C1/815; G03C1/8155; Y; Y10; Y10S; Y10S430/00; Y10S430/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A FINISHED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A PLURALITY OF DEVELOPED AND FIXED PHOTOGRAPHIC EMULSION LAYERS CONTAINING COUPLED-DYE IMAGES, AT LEAST ONE OF SAID DYE IMAGES BEING SUBJECTED TO FADING BY THE ACTION OF ULTRAVIOLET RADIATION, SAID EMULSION LAYER CONTAINING A COUPLER-DYE IMAGE SUBJECTED TO FADING LYING BETWEEN SAID SUPPORT AND A GELATIN LAYER CONTAINING AN ULTRAVIOLET ABSOSRBING COMPOUND SELECTED FROM THE GROUP CONSISTING OF 5-BENZAL-3-ETHYLRHODANINE AND 5-BENZAL-3-METHYL-2,4-THIAZOLIDINEDIONE.
Claim 2
Dependent Claim
70 words
A FINISHED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A PLURALITY OF DEVELOPED AND FIXED PHOTOGRAPHIC EMULSION LAYERS CONTAINING COUPLED-DYE IMAGES, AT LEAST ONE OF SAID DYE IMAGES BEING SUBJECTED TO FADING BY THE ACTION OF ULTRAVIOLET RADIATION, SAID EMULSION LAYER CONTAINING A COUPLER-DYE IMAGE SUBJECTED TO FADING LYING BETWEEN SAID SUPPORT AND A GELATIN LAYER CONTAINING AN ULTRAVIOLET ABSOSRBING COMPOUND SELECTED FROM THE GROUP CONSISTING OF 5-BENZAL-3-ETHYLRHODANINE AND 5-BENZAL-3-METHYL-2,4-THIAZOLIDINEDIONE.
References Cited (Backward Citations)
FR788511A
Cited
AT145203B
Cited
GB454870A
Cited
US2099374A
Cited
US2160907A
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US2241239A
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US2481953A
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US2429469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |