US4010111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitor used in brines containing oxygen
Assignee: ChampionX LLC
•
Filing: 1976-03-29
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Granted: 1977-03-01
•
Expires: 1996-03-29
Abstract
Abstract A corrosion inhibiting composition for aqueous brine water containing dissolved oxygen therein is prepared by the reaction of a carboxylic acid containing from 1 to 48 carbon atoms with a polyamine having the structure H2N(-R-NH)xH where R is an alkylene group containing from 2 to 6 carbon atoms and x is a small whole number greater than 1.
Inventors
- 👤 George D Chappell
- 👤 James R Stanford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:05
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2598213A
Cited
US3200071A
Cited
US3412024A
Cited
US3712862A
Cited
US3623979A
Cited
US3549532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |