Patent US2578282A successfully refreshed from Google Patents.
US2578282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective layer for finished photographic film
Assignee: Eastman Kodak Co
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Filing: 1946-07-09
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Granted: 1951-12-11
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Expires: 1966-07-09
Abstract
No abstract record available.
Inventors
- 👤 Lester E Bliss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:33
CPC Classifications
G; G03; G03C; G03C11/00; G03C11/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24884; Y10T428/31504; Y10T428/31725; Y10T428/31728; Y10T428/31779
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A FINISHED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A PHOTOGRAPHIC EMULSION LAYER CONTAINING A VISIBLE IMAGE, AND LAMINATED OVER SAID EMULSION LAYER, A TRANSPARENT PROTECTIVE SHEET COMPRISING A CELLULOSE ESTER SUPPORT HAVING ON ONE SIDE THEREOF A GELATIN LAYER, AND ON THE OPPOSITE SIDE THEREOF A LAYER OF CELLULOSE ESTER CONTAINING A SUBSTANTIALLY COLORLESS FINELY-DIVIDED PIGMENT, SAID GELATIN LAYER BEING SECURED TO SAID EMULSION LAYER.
Claim 2
Dependent Claim
66 words
A FINISHED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A PHOTOGRAPHIC EMULSION LAYER CONTAINING A VISIBLE IMAGE, AND LAMINATED OVER SAID EMULSION LAYER, A TRANSPARENT PROTECTIVE SHEET COMPRISING A CELLULOSE ESTER SUPPORT HAVING ON ONE SIDE THEREOF A GELATIN LAYER, AND ON THE OPPOSITE SIDE THEREOF A LAYER OF CELLULOSE ESTER CONTAINING A SUBSTANTIALLY COLORLESS FINELY-DIVIDED PIGMENT, SAID GELATIN LAYER BEING SECURED TO SAID EMULSION LAYER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |