US2888400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preventing corrosion
Assignee: ChampionX LLC
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Filing: 1954-04-20
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Granted: 1959-05-26
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Expires: 1974-04-20
Abstract
No abstract record available.
Inventors
- 👤 Green Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:11
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR INHIBITING CORROSION OF A CORRODIBLE FERROUS METAL IN CONTACT WITH A CORROSIVE FLUID FROM OIL AND GASS WELLS WHICH COMPRISES APPLYING TO SAID FERROUS METAL IN SOLUTION IN SAID FLUID A CORROSION INHIBITING AMOUNT OF A QUATERNARY IMIDAZOLINIUM SALT HAVING IN THE 2-POSITON A HIGHER ALIPHATIC GROUP CONTAINING 8 TO 36 CARBON ATOMS AND ATTACHED TO A QUATERNARY NITROGEN ATOM AN ARLKYL RADICAL AND A RADICAL FROM THE GROUP CONSISTING OF ARALKYL RADICALS AND LOWER ALKPHATIC HYDROXY HYDROCARBON RADICALS.
Claim 2
Dependent Claim
82 words
A PROCESS FOR INHIBITING CORROSION OF A CORRODIBLE FERROUS METAL IN CONTACT WITH A CORROSIVE FLUID FROM OIL AND GASS WELLS WHICH COMPRISES APPLYING TO SAID FERROUS METAL IN SOLUTION IN SAID FLUID A CORROSION INHIBITING AMOUNT OF A QUATERNARY IMIDAZOLINIUM SALT HAVING IN THE 2-POSITON A HIGHER ALIPHATIC GROUP CONTAINING 8 TO 36 CARBON ATOMS AND ATTACHED TO A QUATERNARY NITROGEN ATOM AN ARLKYL RADICAL AND A RADICAL FROM THE GROUP CONSISTING OF ARALKYL RADICALS AND LOWER ALKPHATIC HYDROXY HYDROCARBON RADICALS.
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) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |