US2636000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitor containing arsenous oxide and potassium hydroxide
Assignee: California Research LLC
•
Filing: 1951-12-22
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Granted: 1953-04-21
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Expires: 1971-12-22
Abstract
No abstract record available.
Inventors
- 👤 Gilson H Rohrback
- 👤 Dwite M Mccloud
- 👤 Jr Willard R Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:22
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/18; C23F11/184; Y; Y10; Y10S; Y10S507/00; Y10S507/902; Y10S507/939
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
A SOLID CORROSION INHIBITOR CONSISTING ESSENTIALLY OF AN INTIMATE MIXTURE OF ARSENOUS OXIDE, POTASSIUM HYDROXIDE AND WATER, THE RATIO BY WEIGHT OF POTASSIUM HYDROXIDE TO ARSENOUS OXIDE IN THE MIXTURE BEING GREATER THAN 1.2:1 AND THE WATER CONTENT OF THE MIXTURE BEING FROM 1 TO 3.5 PARTS BY WEIGHT TO EACH FIFTEEN PARTS BY WEIGHT OF POTASSIUM HYDROXIDE AND ARSENOUS OXIDE TOGETHER, THE WATER CONTENT BEING LOWER AT LOWER POTASSIUM HYDROXIDE-ARSENOUS OXIDE RATIOS.
Claim 2
Dependent Claim
73 words
A SOLID CORROSION INHIBITOR CONSISTING ESSENTIALLY OF AN INTIMATE MIXTURE OF ARSENOUS OXIDE, POTASSIUM HYDROXIDE AND WATER, THE RATIO BY WEIGHT OF POTASSIUM HYDROXIDE TO ARSENOUS OXIDE IN THE MIXTURE BEING GREATER THAN 1.2:1 AND THE WATER CONTENT OF THE MIXTURE BEING FROM 1 TO 3.5 PARTS BY WEIGHT TO EACH FIFTEEN PARTS BY WEIGHT OF POTASSIUM HYDROXIDE AND ARSENOUS OXIDE TOGETHER, THE WATER CONTENT BEING LOWER AT LOWER POTASSIUM HYDROXIDE-ARSENOUS OXIDE RATIOS.
Claim 3
Independent Claim
95 words
THE METHOD OF INHIBITING CORROSION IN A PRODUCING OIL WELL DELIVERING A PRODUCTION STREAM COMPRISING PETROLEUM, BRINE AND CARBON DIOXIDE GAS WHICH COMPRISES PERIODICALLY INTERRUPTING THE PRODUCTION, DROPPING A SOLID CORROSION INHIBITOR FORMED BY INTIMATELY MIXING ARSENOUS OXIDE, POTASSIUM HYDROXIDE AND WATER, THE RATIO BY WEIGHT OF POTASSIUM HYDROXIDE TO ARSENOUS OXIDE IN THE MIXTURE BEING GREATER THAN 1.2:1 AND THE WATER CONTENT OF THE MIXTURE BEING FROM 1 TO 3.5 PARTS BY WEIGHT TO EACH 15 PARTS BY WEIGHT OF POTASSIUM HYDROXIDE AND ARSENOUS OXIDE TOGETHER, THROUGH THE WELL TUBING AND PRODUCING THE WELL.
Claim 4
Independent Claim
95 words
THE METHOD OF INHIBITING CORROSION IN A PRODUCING OIL WELL DELIVERING A PRODUCTION STREAM COMPRISING PETROLEUM, BRINE AND CARBON DIOXIDE GAS WHICH COMPRISES PERIODICALLY INTERRUPTING THE PRODUCTION, DROPPING A SOLID CORROSION INHIBITOR FORMED BY INTIMATELY MIXING ARSENOUS OXIDE, POTASSIUM HYDROXIDE AND WATER, THE RATIO BY WEIGHT OF POTASSIUM HYDROXIDE TO ARSENOUS OXIDE IN THE MIXTURE BEING GREATER THAN 1.2:1 AND THE WATER CONTENT OF THE MIXTURE BEING FROM 1 TO 3.5 PARTS BY WEIGHT TO EACH 15 PARTS BY WEIGHT OF POTASSIUM HYDROXIDE AND ARSENOUS OXIDE TOGETHER, THROUGH THE WELL TUBING AND PRODUCING THE WELL.
References Cited (Backward Citations)
US1638710A
Cited
US1877504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |