US2582129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of corrosion in aqueous systems
Assignee: ChampionX LLC
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Filing: 1948-09-13
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Granted: 1952-01-08
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Expires: 1968-09-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Jacoby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:02
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/18; C23F11/187
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A CORROSION INHIBITING COMPOSITION ADAPTED TO BE ADDED TO AN AQUEOUS FLUID WHICH CONTACTS METALLIC SURFACES, SAID COMPOSITION CONSISTING ESSENTIALLY OF A WATER SOLUBLE CHROMATE AND A WATER SOLUBLE NITRATE IN RELATIVE WEIGHT PROPORTIONS OF 500 TO 3000 PARTS OF THE WATER SOLUBLE CHROMATE, EXPRESSED AS NA2CR2O7.2H2O, AND 250 TO 1000 PARTS OF THE WATER SOLUBLE NITRATE, EXPRESSED AS NANO3, SAID COMPOSITION BEING EFFECTIVE TO INHIBIT CORROSION IN THE AQUEOUS SOLUTIONS IN CONTACT WITH ALUMINUM AND COPPER WHEN PRESENT IN SAID SOLUTIONS IN PROPORTIONS CORRESPONDING TO 0.05 TO 0.3% BY WEIGHT OF WATER SOLUBEL CHROMATE, EXPRESSED AS NA2CR2O7.2H2O, AND 0,025 TO 0.1% BY WEIGHT OF WATER SOLUBLE NITRATE, EXPRESSED AS NANO3.
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |