US2635970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Translucent paper base
Assignee: Eastman Kodak Co
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Filing: 1948-11-26
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Granted: 1953-04-21
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Expires: 1968-11-26
Abstract
No abstract record available.
Inventors
- 👤 Salo Martin
- 👤 Harold F Vivian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:22
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/21; D21H17/24; D21H17/25; D21H17/27; D21H17/03; D21H17/05; D21H17/11; D21H19/00; D21H19/10; D21H19/14; D21H19/34; D21H27/00; D21H27/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982; Y10T428/31986
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A WATER-PROOF TRANSLUCENT PAPER CONSISTING OF PAPER HAVING A LOOSE, POROUS STRUCTURE IMPREGNATED WITH A COMPOSITION SOLID AT ROOM TEMPERATURE CONSISTING OF APPROXIMATELY 25 PARTS OF CELLULOSE ACETATE BUTYRATE AND APPROXIMATELY 75 PARTS CHLORINATED DIPHENYL WHICH COMPOSITION HAS A VISCOSITY OF LESS THAN 5000 CENTIPOISES AT 170* C. AND A REFRACTIVE INDEX APPROXIMATELY THAT OF PAPER AND HAVING AS AN OVERCOAT THEREON A COATING ESSENTIALLY CONSISTING OF CELLULOSE ACETATE BUTYRATE DIBUTYL SEBACATE AND BUTYL STEARATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |