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US2935475A
Expired / Lapsed
US
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Well treating
Assignee: Pure Oil Co
•
Filing: 1957-12-16
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Granted: 1960-05-03
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 George G Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:21
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/607; Y; Y10; Y10S; Y10S507/00; Y10S507/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A METHOD FOR STABILIZING THE CLAY CONTENT OF CLAYCONTAINING FORMATIONS IN THE PRESENCE OF NON-SALINE WATER COMPRISING CONTACTING SAID FORMATIONS WITH A SOLUTION OF AT LEAST ONE ACID SALT OF AN AMINOALKYALKOXYLANE OF THE FORMULA:
Claim 2
Independent Claim
35 words
A METHOD FOR STABILIZING THE CLAY CONTENT OF CLAYCONTAINING FORMATIONS IN THE PRESENCE OF NON-SALINE WATER COMPRISING CONTACTING SAID FORMATIONS WITH A SOLUTION OF AT LEAST ONE ACID SALT OF AN AMINOALKYALKOXYLANE OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |