Patent US2934518A successfully refreshed from Google Patents.
US2934518A
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Poly (ethylene oxide) stabilized with propyl gallate
Assignee: Union Carbide Corp
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Filing: 1956-06-20
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Granted: 1960-04-26
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Expires: 1976-06-20
Abstract
No abstract record available.
Inventors
- 👤 Keith L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C08K5/1345
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
A COMPOSITION COMPRISING POLY(ETHYLENE OXIDE) WHICH HAS A REDUCED VISCOSITY VALUE OF AT LEAST 1.0 AS DETERMINED AT A CONCENTRATION OF 0.2 GRAM OF SAID POLY(ETHYLENE OXIDE) IN 100 MILLILITERS OF ACETONITRILE AT 30*C., AND A STABILIZING AMOUNT OF PROPYL GALLATE.
References Cited (Backward Citations)
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US2255191A
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US2432517A
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GB618839A
Cited
US2758931A
Cited
US2722492A
Cited
US2722493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |