US2520356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for inhibiting corrosion of ferrous metal
Assignee: TIDE WATER ASSOCIATED OIL Co
•
Filing: 1946-09-25
•
Granted: 1950-08-29
•
Expires: 1966-09-25
Abstract
No abstract record available.
Inventors
- 👤 John W Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:54
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31714
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
METHOD FOR INHIBITING CORROSION OF A FERROUS METAL UPON EXPOSURE TO HIGHLY HUMID-RUST INDUCING ATMOSPHERES WHICH COMPRISES COATING THE SURFACE OF SAID METAL WITH A SUBSTANTIALLY NON-CORROSIVE LIQUID HAVING DISSOLVED THEREIN A SMALL AMOUNT, SUFFICIENT TO SUBSTANTIALLY INCREASE THE RUST-PREVENTIVE CHARACTERISTICS OF SAID LIQUID, OF A TERTIARY ALKYL ALKYLOLAMINE CONTAINING AN ALKYLOL GROUP ESTERFIED WITH A LONG CHAIN FATTY ACID OBTAINED BY HYDROLYSIS OF A MEMBER OF THE GROUP CONSISTING OF NATURALLY-OCCURRING FATS AND NATURALLY-OCCURRING FATTY OILS.
References Cited (Backward Citations)
US2018758A
Cited
FR814699A
Cited
US2162454A
Cited
US2216376A
Cited
US2382699A
Cited
GB573623A
Cited
US2369946A
Cited
US2403067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |