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US2805201A
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US
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Corrosion prevention in oil wells
Assignee: Union Oil Company of California
•
Filing: 1954-07-19
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Granted: 1957-09-03
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Expires: 1974-07-19
Abstract
No abstract record available.
Inventors
- 👤 Paul W Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:56
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141; C23F11/142; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A CORROSION INHIBITING COMPOSITION FOR USE IN OIL WELLS COMPRISING A SOLUTION OF AN ESTER OF A DIMERIZED POLYUNSATURATED FATTY ACID CONTAINING FROM 16 TO 22 CARBON ATOMS AND AN ALKANOLAMINE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
35 words
A CORROSION INHIBITING COMPOSITION FOR USE IN OIL WELLS COMPRISING A SOLUTION OF AN ESTER OF A DIMERIZED POLYUNSATURATED FATTY ACID CONTAINING FROM 16 TO 22 CARBON ATOMS AND AN ALKANOLAMINE HAVING THE GENERAL 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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |