Patent US2776236A successfully refreshed from Google Patents.
US2776236A
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Waterproof photographic paper and method of making same
Assignee: Eastman Kodak Co
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Filing: 1954-03-19
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Granted: 1957-01-01
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Expires: 1974-03-19
Abstract
No abstract record available.
Inventors
- 👤 Henry C Staehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:50
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A WATERPROOF PAPER HAVING A BINARY COATING, A FIRST COAT COMPRISING A COPOLYMER OF ETHYL ACRYLATE AND ACRYLONITRILE AND A SECOND COAT COMPRISING AN INTERPOLYMER OF N-METHYL METHACRYLAMIDE, N-BUTYL ACRYLATE AND ACRYLONITRILE.
Claim 2
Dependent Claim
32 words
A WATERPROOF PAPER HAVING A BINARY COATING, A FIRST COAT COMPRISING A COPOLYMER OF ETHYL ACRYLATE AND ACRYLONITRILE AND A SECOND COAT COMPRISING AN INTERPOLYMER OF N-METHYL METHACRYLAMIDE, N-BUTYL ACRYLATE AND ACRYLONITRILE.
References Cited (Backward Citations)
US450963A
Cited
US1751882A
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US2276244A
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US2273880A
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US2392972A
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US2571725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |