US3794523A
Expired / Lapsed
US
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Assignee: Schlumberger Technology Corp
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Filing: 1971-07-08
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Granted: 1974-02-26
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Expires: 1991-07-08
Abstract
Abstract AN AROMATIC SOLVENT IN AQUEOUS ACID ADDITION EMULSION IS PROVIDED WHICH IS USEFUL FOR TREATING MATERIALS WHICH ARE NORMALLY SOLUBILIZED BY SAID ACID BUT WHICH ARE OCCLUDED, E.G. COATED, WITH AN ORGANIC DEPOSIT.
Inventors
- 👤 J Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:33
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C09; C09K; C09K8/00; C09K8/52; C09K8/528; C23; C23G; C23G5/00; C23G5/06; Y; Y10; Y10S; Y10S507/00; Y10S507/927
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |