US2756211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
jones
Assignee: —
•
Filing: —
•
Granted: 1956-07-24
•
Expires: 1973-07-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:17
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141; C23F11/143; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD FOR INHIBITING CORROSION OF FERROUS METALS BY FLUIDS CONTAINING WATER AND A MEMBER OF THE GROUP OF CORROSIVE MATERIALS CONSISTING OF HYDROGEN SULFIDE, CARBON DIOXIDE, ORGANIC ACIDS CONTAINING FROM 2 TO 4 CARBON ATOMS PER MOLECULE, COMBINATIONS OF THESE MATERIALS WITH EACH OTHER, COMBINATIONS OF EACH OF SAID CORROSIVE MATERIALS, WITH OXYGEN AND COMBINATIONS OF SAID MATERIALS WITH EACH OTHER AND OXYGEN, COMPRISING ADDING TO SAID FLUIDS, PER MILLION PARTS OF SAID FLUIDS, AT LEAST 5 PARTS BY WEIGHT EACH OF AN ALIPHATIC AMINE AND OF A CARBOXYLIC ACID, SAID AMINE CONTAINING A HYDROCARBON RADICAL HAVING AT LEAST 10 CARBON ATOMS PER MOLECULE, AND SAID ACID CONTAINING AT LEAST 6 CARBON ATOMS PER MOLECULE.
Claim 2
Independent Claim
116 words
A METHOD FOR INHIBITING CORROSION OF FERROUS METALS BY FLUIDS CONTAINING WATER AND A MEMBER OF THE GROUP OF CORROSIVE MATERIALS CONSISTING OF HYDROGEN SULFIDE, CARBON DIOXIDE, ORGANIC ACIDS CONTAINING FROM 2 TO 4 CARBON ATOMS PER MOLECULE, COMBINATIONS OF THESE MATERIALS WITH EACH OTHER, COMBINATIONS OF EACH OF SAID CORROSIVE MATERIALS, WITH OXYGEN AND COMBINATIONS OF SAID MATERIALS WITH EACH OTHER AND OXYGEN, COMPRISING ADDING TO SAID FLUIDS, PER MILLION PARTS OF SAID FLUIDS, AT LEAST 5 PARTS BY WEIGHT EACH OF AN ALIPHATIC AMINE AND OF A CARBOXYLIC ACID, SAID AMINE CONTAINING A HYDROCARBON RADICAL HAVING AT LEAST 10 CARBON ATOMS PER MOLECULE, AND SAID ACID CONTAINING AT LEAST 6 CARBON ATOMS PER MOLECULE.
References Cited (Backward Citations)
US2460259A
Cited
US2468163A
Cited
US2629649A
Cited
US2649415A
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US2643227A
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US2614981A
Cited
US2614980A
Cited
US2640809A
Cited
US2646399A
Cited
US2583399A
Cited
US2675355A
Cited
US2599385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |