Patent US4253876A successfully refreshed from Google Patents.
US4253876A
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US
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Corrosion inhibitors
Assignee: Baker Hughes Holdings LLC
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Filing: 1980-02-19
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Granted: 1981-03-03
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Expires: 2000-02-19
Abstract
Abstract This invention relates to a composition comprising (1) an alkenyl or alkyl succinic acid or the anhydride thereof; and (2) a triester of about 3 moles of an alkenyl or alkyl succinic acid or the anhydride thereof and about 1 mole of a trialkanolamine; and to the use thereof as a corrosion inhibitor.
Inventors
- 👤 Richard L. Godar
- 👤 Carl C. Hendricks
- 👤 Kenneth R. Roux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:57
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
40 words
A composition comprising (1) an alkenyl or alkyl succinic acid or the anhydride thereof; and (2) a triester of about 3 moles of an alkenyl or alkyl succinic acid or the anhydride thereof and about 1 mole of a trialkanolamine.
Claim 2
Dependent Claim
40 words
A composition comprising (1) an alkenyl or alkyl succinic acid or the anhydride thereof; and (2) a triester of about 3 moles of an alkenyl or alkyl succinic acid or the anhydride thereof and about 1 mole of a trialkanolamine.
Claim 3
Dependent Claim
10 words
The composition of claim 1 where the trialkanolamine is triethanolamine.
Claim 4
Dependent Claim
14 words
The composition of claim 1 where the alkenyl succinic anhydride is tetrapropenyl succinic anhydride.
Claim 5
Dependent Claim
14 words
The composition of claim 2 where the alkenyl succinic anhydride is tetrapropenyl succinic anhydride.
Claim 6
Dependent Claim
16 words
A process for inhibiting corrosion which comprises treating a system with the composition of claim 1.
Claim 7
Dependent Claim
16 words
A process of inhibiting corrosion which comprises treating a system with the composition of claim 2.
Claim 8
Dependent Claim
16 words
A process of inhibiting corrosion which comprises treating a system with the composition of claim 3.
Claim 9
Dependent Claim
16 words
A process of inhibiting corrosion which comprises treating a system with the composition of claim 4.
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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |