US3661785A
Expired / Lapsed
US
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Inhibition of deposition of water insoluble compounds in aqueous systems
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1970-04-27
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Granted: 1972-05-09
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Expires: 1990-04-27
Abstract
Abstract DEPOSITION OF WATER INSOLUBLE COMPOUNDS FROM AQUEOUS SYSTEM CONTAINING THEM IS INHIBITED BY ADDING TO THE AQUEOUS SYSTEM, WHICH MAY BE SUBSURFACE FORMATION WATER OR BRINE, A SMALL BUT EFFECTIVE AMOUNT OF A PHOSPHATE ESTER OF ETHOXYLATED ESTERIFIED TRIOL OR THE ALKALI METAL OR AMMONIUM SALTS THEREOF.
Inventors
- 👤 William G De Pierri Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:48
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/14; Y; Y10; Y10S; Y10S507/00; Y10S507/927
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |