US2658036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for preventing deposition and corrosion in oil well equipment
Assignee: Texas Acidizers Inc
•
Filing: 1950-07-19
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Granted: 1953-11-03
•
Expires: 1970-07-19
Abstract
No abstract record available.
Inventors
- 👤 Clark D Core
- 👤 Edward N Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:54
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/18; C23F11/187; C23F11/188; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A COMPOSITION FOR REMOVING AND PREVENTING SCALE DEPOSITION AND PREVENTING CORROSION IN OIL WELL EQUIPMENT COMPRISING 4-45% BY WEIGHT OF A 40% AQUEOUS SOLUTION OF AN ALKALI METAL ARSENITE, 4-45% BY WEIGHT OF AN ALKALI METAL HEXAMETAPHOSPHATE AND A MINOR AMOUNT OF SURFACEACTIVE DEMULSIFICATION AGENT, THE BALANCE BEING WATER.
Claim 2
Dependent Claim
49 words
A COMPOSITION FOR REMOVING AND PREVENTING SCALE DEPOSITION AND PREVENTING CORROSION IN OIL WELL EQUIPMENT COMPRISING 4-45% BY WEIGHT OF A 40% AQUEOUS SOLUTION OF AN ALKALI METAL ARSENITE, 4-45% BY WEIGHT OF AN ALKALI METAL HEXAMETAPHOSPHATE AND A MINOR AMOUNT OF SURFACEACTIVE DEMULSIFICATION AGENT, THE BALANCE BEING WATER.
References Cited (Backward Citations)
US935695A
Cited
US1903041A
Cited
US1877504A
Cited
US2204580A
Cited
US2262737A
Cited
US2426318A
Cited
US2429594A
Cited
US2468163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |