US3696035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well treatments with thickened aqueous alcohol mixtures
Assignee: Schlumberger Technology Corp
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Filing: 1970-11-04
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Granted: 1972-10-03
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Expires: 1990-11-04
Abstract
Abstract A NOVEL THICKENED LIQUID COMPOSITION AND METHOD OF TREATING WELLS IS DESCRIBED HEREIN. THE LIQUID COMPOSITION COMPRISES AN AQUEOUS-ALCOHOL MIXTURE THICKENED WITH A CELLULOSE DERIVATIVE THICKENER AND CONTAINING AS AN INTERNAL BREAKER A PERIODIC ACID AND/OR A WATER SOLUBLE SALT THEREOF.
Inventors
- 👤 Kenneth H Nimerick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; Y; Y10; Y10S; Y10S507/00; Y10S507/921; Y10S507/922
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |