US2586709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for suppressing the corrosion of copper-containing alloys in the presence of ammonium salts
Assignee: Standard Oil Development Co
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Filing: 1949-08-03
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Granted: 1952-02-19
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Expires: 1969-08-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Cecil Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:30
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C23F11/163; Y; Y10; Y10S; Y10S71/00; Y10S71/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD FOR REDUCING THE CORROSIVE ACTION OF A CORROSIVE SOLUTION INCLUDING WATER, OXYGEN, AND AMMONIUM SALT TO AN ARTICLE HAVING A CORRODIBLE SURFACE CONSISTING PREDOMINANTLY OF COPPER WITH MINOR AMOUNTS OF TIN AND ZINC IN CONTACT WITH SAID SOLUTION WHICH COMPRISES INTRODUCING INTO SAID SOLUTION AN AMOUNT OF AN ALKALI METAL SALT OF AN OIL SOLUBLE PETROLEUM SULFONIC ACID SUFFICIENT TO INHIBIT THE CORROSION THEREOF.
Claim 2
Independent Claim
66 words
A METHOD FOR REDUCING THE CORROSIVE ACTION OF A CORROSIVE SOLUTION INCLUDING WATER, OXYGEN, AND AMMONIUM SALT TO AN ARTICLE HAVING A CORRODIBLE SURFACE CONSISTING PREDOMINANTLY OF COPPER WITH MINOR AMOUNTS OF TIN AND ZINC IN CONTACT WITH SAID SOLUTION WHICH COMPRISES INTRODUCING INTO SAID SOLUTION AN AMOUNT OF AN ALKALI METAL SALT OF AN OIL SOLUBLE PETROLEUM SULFONIC ACID SUFFICIENT TO INHIBIT THE CORROSION THEREOF.
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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |