Patent US3663477A successfully refreshed from Google Patents.
US3663477A
Expired / Lapsed
US
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Dilatant aqueous polymer solutions
Assignee: ExxonMobil Upstream Research Co
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Filing: 1970-02-27
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Granted: 1972-05-16
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Expires: 1990-02-27
Abstract
Abstract A COMPOSITION OF MATTER INCLUDING AS ESSENTIAL INGREDIENTS AT LEAST 0.001 WEIGHT PERCENT OF A HIGH MOLECULAR WEIGHT POLYMER OF ETHYLENE OXIDE, BETWEEN ABOUT 0.5 WEIGHT PERCENT AND ABOUT 10 WEIGHT PERCENT OF A PETROLEUM SULFONATE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 400, AND A MAJOR PROPORTION OF WATER. THE COMPOSITION EXHIBITS NON-NEWTORIAN DILATANT RHEOLOGICAL CHARACTERISTICS. THE COMPOSITION HAS UTILITY AS A LIQUID VEHICLE FOR THE TRANSPORTATION OF PARTICULATE SOLIDS, AS A FLUID FOR FRACTURING SUBTERRANEAN OIL-BEARING FORMATIONS, AND AS A FLUID FOR DISPLACING OIL FROM SUBTERRANEAN FORMATIONS.
Inventors
- 👤 George P Ahearn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:30
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; Y; Y10; Y10S; Y10S507/00; Y10S507/922; Y10S507/935; Y10S507/936; Y10S516/00; Y10S516/01; Y10S516/02
Claims Analysis
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |