Patent US3682849A successfully refreshed from Google Patents.
US3682849A
Expired / Lapsed
US
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Alcohol ethoxylates
Assignee: Shell USA Inc
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Filing: 1970-10-08
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Granted: 1972-08-08
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Expires: 1990-10-08
Abstract
Abstract CERTAIN MIXTURES OF ETHYLENE OXIDE DERIVATIVES OF PRIMARY ALCOHOLS OF 11 TO 15 CARBON ATOMS, SUBSTANTIALLY FREE FROM ALCOHOL AND LOWER ETHYOXYLATES, ARE SURFACTATS EXHIBITING SUPERIOR PHYSICAL PROPERTIES.
Inventors
- 👤 George Smith
- 👤 Webster M Sawyer Jr
- 👤 Rupert C Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:21
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/825; C11D1/8255; C11D1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |