Patent US2773050A successfully refreshed from Google Patents.
US2773050A
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Water vapor permeable compositions and articles containing a polyacrylic ester and polyvinyl alcohol
Assignee: Eastman Kodak Co
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Filing: 1952-04-30
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Granted: 1956-12-04
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Expires: 1972-04-30
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Gilkey Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/267; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2139
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A PROCESS FOR PREPARING A SYNTHETIC RESINOUS COMPOSITION WHICH RESISTS THE PASSAGE OF LIQUID WATER BUT PERMITS TRANSMISSION OF WATER VAPOR COMPRISING (A) POLYMERIZING IN AN AQUEOUS MEDIUM AT A TEMPERATURE OF FROM ABOUT 45* C. TO ABOUT 120* C. IN THE PRESENCE OF A WATER-SOLUBLE PEROXIDE POLYMERIZATION CATALYST (A) FROM ABOUT 25 TO ABOUT 80 PARTS BY WEIGHT OF AN ETHYLENICALLY UNSATURATED POLYMERIZABLE MATERIAL WHEREIN ALL CARBOXY GROUPS ARE ESTERFIED AND WHICH CONSISTS OF AT LEAST 50 MOLE PERCENT OF AT LEAST ONE ACRYLIC ESTER HAVING THE FORMULA:
References Cited (Backward Citations)
US2047398A
Cited
GB437604A
Cited
US2310223A
Cited
US2407107A
Cited
US2600681A
Cited
US2540962A
Cited
FR999594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |