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Patent US2488149A successfully refreshed from Google Patents.
US2488149A
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Emulsion polymerization of diolefins in the presence of an alkyl ethanolamine soap
Assignee: Standard Oil Development Co
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Filing: 1946-07-23
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Granted: 1949-11-15
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Expires: 1966-07-23
Abstract
No abstract record available.
Inventors
- 👤 Byron M Vanderbilt
- 👤 Bascom Frances
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:31
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 0
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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) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |