US3034210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibition of corrosion of magnesium
Assignee: Dow Chemical Co
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Filing: 1959-09-03
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Granted: 1962-05-15
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Expires: 1979-09-03
Abstract
No abstract record available.
Inventors
- 👤 Long Herbert K De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:07
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/005; C23F11/00; C23F11/08; C23F11/18; C23F11/187; Y; Y10; Y10S; Y10S29/00; Y10S29/034; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
THE METHOD OF SUPPRESSING CORROSION OF AN ARTICLE COMPOSED OF AT LEAST 60 PERCENT MAGNESIUM WHEN ELECTRICALLY COUPLED TO A MORE NOBLE METAL IN AN ELECTROLYTIC MEDIUM WHICH CONSISTS OF INCORPORATING INTO A FILM-FORMING COMPOSITION A TIN COMPOUND HAVING A WATER-SOLUBILITY AT ABOUT 20* C. OF AT LEAST 0.05 WEIGHT PERCENT IN AN AMOUNT OF AT LEAST 1 PERCENT AND A SOLUBLE METAL NITRATE IN AN AMOUNT OF BETWEEN 0.1 AND 5.0 PERCENT, BY WEIGHT OF THE FILM-FORMING COMPOSITION, APPLYING SAID COMPOSITION IN AN UNCURED STATE TO AT LEAST ONE OF THE SURFACES OF THE MAGNESIUM METAL ARTICLE AND THE MORE NOBLE METAL WHICH WILL BE IN ELECTRICAL CONTACT WHEN COUPLED TOGETHER, COUPLING THE MAGNESIUM AND MORE NOBLE METAL, AND CURING SAID FILM IN SITU.
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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |