US2695876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of corrosion of iron by aqueous brines
Assignee: Texaco Inc
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Filing: 1951-04-27
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Granted: 1954-11-30
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Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
- 👤 Robert E Fariss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:20
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/18; C23F11/185; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN THE PROTECTION OF FERROUS METAL FROM THE CORROSIVE EFFECT OF AQUEOUS SOLUTIONS WHICH TEND TO SUBSTANTIALLY CORRODE THE SURFACES OF SAID FERROUS MATERIAL CONTACTED THEREBY, THE STEPS WHICH COMPRISES INCORPORATING WITHIN SAID AQUEOUS SOLUTIONS A SMALL AMOUNT OF ZINC CHROMATE AND THEREAFTER MAINTAINING SAID FERROUS METAL SURFACES WET BY CONTACT WITH SUCH SOLUTION FOR AN EXTENDED PERIOD OF TIME.
Claim 2
Dependent Claim
60 words
IN THE PROTECTION OF FERROUS METAL FROM THE CORROSIVE EFFECT OF AQUEOUS SOLUTIONS WHICH TEND TO SUBSTANTIALLY CORRODE THE SURFACES OF SAID FERROUS MATERIAL CONTACTED THEREBY, THE STEPS WHICH COMPRISES INCORPORATING WITHIN SAID AQUEOUS SOLUTIONS A SMALL AMOUNT OF ZINC CHROMATE AND THEREAFTER MAINTAINING SAID FERROUS METAL SURFACES WET BY CONTACT WITH SUCH SOLUTION FOR AN EXTENDED PERIOD OF TIME.
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) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |