US2750339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for inhibiting corrosion
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-04-03
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Granted: 1956-06-12
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Expires: 1973-04-03
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Steinhauff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD OF REDUCING THE CORROSIVENESS TO A CORRODIBLE FERROUS METAL OF A CORROSIVE FLUID COMPRISING WATER AND AN ACIDIC COMPONENT IN CONTACT WITH SAID FERROUS METAL WHICH COMPRISES, ADDING TO SAID CORROSIVE FLUID, AN INHIBITING AMOUNT OF THE REACTION PRODUCT OBTAINED BY HEATING TOGETHER AT AN AMIDIFICATION REACTION TEMPERATURE REACTIVE AMOUNTS OF AN ALKYLENE PRIMARY POLYAMINE AND THE RESIDUE CONTAINING LONG-CHAINED POLYCARBOXYLIC ACIDS HAVING AN ACID NUMBER IN THE RANGE BETWEEN ABOUT 140 AND ABOUT 180, HAVING AN IODINE NUMBER BETWEEN ABOUT 30 AND ABOUT 80, AND BEING THE NONVOLATILE MATERIAL REMAINING FROM DISTILLING AT A REDUCED PRESSURE, THE BY-PRODUCT ACIDS OBTAINED IN THE PREPARATION OF SEBACIC ACID FROM CASTOR OIL BY TREATMENT WITH ALKALI.
Claim 2
Independent Claim
116 words
A METHOD OF REDUCING THE CORROSIVENESS TO A CORRODIBLE FERROUS METAL OF A CORROSIVE FLUID COMPRISING WATER AND AN ACIDIC COMPONENT IN CONTACT WITH SAID FERROUS METAL WHICH COMPRISES, ADDING TO SAID CORROSIVE FLUID, AN INHIBITING AMOUNT OF THE REACTION PRODUCT OBTAINED BY HEATING TOGETHER AT AN AMIDIFICATION REACTION TEMPERATURE REACTIVE AMOUNTS OF AN ALKYLENE PRIMARY POLYAMINE AND THE RESIDUE CONTAINING LONG-CHAINED POLYCARBOXYLIC ACIDS HAVING AN ACID NUMBER IN THE RANGE BETWEEN ABOUT 140 AND ABOUT 180, HAVING AN IODINE NUMBER BETWEEN ABOUT 30 AND ABOUT 80, AND BEING THE NONVOLATILE MATERIAL REMAINING FROM DISTILLING AT A REDUCED PRESSURE, THE BY-PRODUCT ACIDS OBTAINED IN THE PREPARATION OF SEBACIC ACID FROM CASTOR OIL BY TREATMENT WITH ALKALI.
References Cited (Backward Citations)
US2471230A
Cited
US2646399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |