US3061553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitors
Assignee: ConocoPhillips Co
•
Filing: 1958-07-07
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Granted: 1962-10-30
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Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Olen L Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:32
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF INHIBITING CORROSION FERROUS METALS IN CONTACT WITH CORROSIVE FLUIDS CONTAINING AN ACIDIC REACTANT SELECTED FROM THE GROUP CONSISTING OF CARBON DIOXIE AND HYDROGEN SULFIDE WHICH COMPRISES THE ADDITION TO SAID FLUIDS 1 TO 500 P.P.M OF THE REACTION PRODUCT FORMED BY REACTING 1 MOLE OF AN N-ALKYLPOLYALKYLENEPOLYAMINE HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF 150 TO 500 AND FROM TWO TO ABOUT FIVE AMINO GROUPS PER MOLECULE WITH 0.1 TO 0.6 EQUIVALENT OF A HYDROXY BENZOIC ACID AT A TEMPERATURE SUFFICIENTLY HIGH TO EFFECT ELIMINATION OF WATER.
Claim 2
Independent Claim
91 words
THE METHOD OF INHIBITING CORROSION FERROUS METALS IN CONTACT WITH CORROSIVE FLUIDS CONTAINING AN ACIDIC REACTANT SELECTED FROM THE GROUP CONSISTING OF CARBON DIOXIE AND HYDROGEN SULFIDE WHICH COMPRISES THE ADDITION TO SAID FLUIDS 1 TO 500 P.P.M OF THE REACTION PRODUCT FORMED BY REACTING 1 MOLE OF AN N-ALKYLPOLYALKYLENEPOLYAMINE HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF 150 TO 500 AND FROM TWO TO ABOUT FIVE AMINO GROUPS PER MOLECULE WITH 0.1 TO 0.6 EQUIVALENT OF A HYDROXY BENZOIC ACID AT A TEMPERATURE SUFFICIENTLY HIGH TO EFFECT ELIMINATION OF WATER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |