US2913420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibition of brine
Assignee: Dow Chemical Co
•
Filing: 1956-10-18
•
Granted: 1959-11-17
•
Expires: 1976-10-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Edwin N Alderman
- 👤 Caleb M Stout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:58
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A BRINE HAVING ABOUT 10 PERCENT BY WEIGHT OF BRINE SALT AND A PH OF AT LEAST 2 NORMALLY CORROSIVE OF FERROUS METALS CONTAINING AS A CORROSION INHIBITING COMBINATION BETWEEN 0.5 AND 42 POUNDS OF A WATER-SOLUBLE CHROMATE AND BETWEEN 1 AND 100 POUNDS OF A NON-IONIC SURFACANT PER 1000 GALLONS OF BRINE.
Claim 2
Dependent Claim
53 words
A BRINE HAVING ABOUT 10 PERCENT BY WEIGHT OF BRINE SALT AND A PH OF AT LEAST 2 NORMALLY CORROSIVE OF FERROUS METALS CONTAINING AS A CORROSION INHIBITING COMBINATION BETWEEN 0.5 AND 42 POUNDS OF A WATER-SOLUBLE CHROMATE AND BETWEEN 1 AND 100 POUNDS OF A NON-IONIC SURFACANT PER 1000 GALLONS OF BRINE.
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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |