US3976593A
Expired / Lapsed
US
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Amine bisulfites
Assignee: Baker Petrolite LLC
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Filing: 1975-05-19
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Granted: 1976-08-24
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Expires: 1995-05-19
Abstract
Abstract This invention relates to the amine bisulfites which are useful as a combination corrosion inhibitor/oxygen scavenger. This is illustrated by heterocyclic amine bisulfites such as pyridine bisulfites.
Inventors
- 👤 Francis J. Hartke
- 👤 James E. Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:17
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C02; C02F; C02F1/00; C02F1/20
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
7 words
A corrosion inhibiting composition comprising triethanolamine bisulfite.
Claim 2
Dependent Claim
7 words
A corrosion inhibiting composition comprising triethanolamine bisulfite.
Claim 3
Dependent Claim
10 words
A corrosion inhibiting composition comprising a tertinary heterocyclic amine bisulfite.
Claim 4
Dependent Claim
10 words
A corrosion inhibiting composition comprising a tertinary heterocyclic amine bisulfite.
Claim 5
Dependent Claim
43 words
The bisulfite of claim 2 wherein the tertiary heterocyclic amine is selected from the group consisting of alkyl pyridines, quinoline, isoquinoline, benzoquinoline, phenanthridine, acridine; alkyl substituted quinolines, isoquinolines, benzoquinolines, phenanthridines and acridines; bis-2-(4-morpholinyl) ethyl ether, 4-(2-aminoethoxy) ethylmorpholine, 2-(4-morpholinylethoxy) ethanol, 4-(2-aminoethyl)morpholine, dimorpholinoethane and picoline.
Claim 6
Dependent Claim
18 words
The bisulfite of claim 2 where the tertiary heterocyclic amine is a pyridine amine or a morpholine amine.
Claim 7
Dependent Claim
21 words
A process of oxygen scavenging and corrosion inhibition which comprises treating a corrosive aqueous medium with the composition of claim 3.
Claim 8
Dependent Claim
21 words
A process of oxygen scavenging and corrosion inhibition which comprises treating a corrosive aqueous medium with the composition of claim 1.
Claim 9
Dependent Claim
21 words
A process of oxygen scavenging and corrosion inhibition which comprises treating a corrosive aqueous medium with the composition of claim 2.
Claim 10
Dependent Claim
21 words
A process of oxygen scavenging and corrosion inhibition which comprises treating a corrosive aqueous medium with the composition of claim 4.
Claim 11
Dependent Claim
53 words
A process of preventing corrosion of metals employed in water flooding or in the disposal of waste water and brine from oil and gas wells, which comprises injecting into an underground formation, an aqueous solution containing a minor amount of the composition of claim 1 sufficient to prevent the corrosion of said metals.
Claim 12
Dependent Claim
53 words
A process of preventing corrosion of metals employed in water flooding or in the disposal of waste water and brine from oil and gas wells, which comprises injecting into an underground formation, an aqueous solution containing a minor amount of the composition of claim 2 sufficient to prevent the corrosion of said metals.
Claim 13
Dependent Claim
53 words
A process of preventing corrosion of metals employed in water flooding or in the disposal of waste water and brine from oil and gas wells, which comprises injecting into an underground formation, an aqueous solution containing a minor amount of the composition of claim 4 sufficient to prevent the corrosion of said metals.
Claim 14
Dependent Claim
53 words
A process of preventing corrosion of metals employed in water flooding or in the disposal of waste water and brine from oil and gas wells, which comprises injecting into an underground formation, an aqueous solution containing a minor amount of the composition of claim 3 sufficient to prevent the corrosion of said metals.
Claim 15
Dependent Claim
11 words
A composition comprising the compound of claim 1 and cobalt ions.
Claim 16
Dependent Claim
11 words
A composition comprising a compound of claim 2 and cobalt ions.
Claim 17
Dependent Claim
11 words
A composition comprising a compound of claim 4 and cobalt ions.
Claim 18
Dependent Claim
11 words
A composition comprising a compound of claim 3 and cobalt ions.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |