US2864730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for protecting magnesium and magnesium alloys from corrosion
Assignee: Allied Res Products Inc
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Filing: 1953-12-17
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Granted: 1958-12-16
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Expires: 1973-12-17
Abstract
No abstract record available.
Inventors
- 👤 David H Kinder
- 👤 Stricklen Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:17
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A COMPOSITION FOR USE IN AQUEOUS SOLUTION TO IMPART A PROTECTIVE COATING TO MAGNESIUM ALLOY ARTICLES CONSISTING ESSENTIALLY OF A HEXAVALENT CHROMIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMIC ACID AND SALTS THEREOF IN AMOUNT OF ABOUT 14 TO 37%, A NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID AND SALTS THEREOF IN AMOUNT OF ABOUT 32 TO 70%, AND A CHLORIDE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID AND SALTS THEREOF IN AMOUNT OF ABOUT 4 TO 50%, THE FOREGOING PERCENT RANGES BEING CALCULATED ON THE BASIS OF THE TOTAL WEIGHT OF ACTIVE IONS PRESENT IN AN AQUEOUS SOLUTION CONTAINING SAID COMPOSITION AND HAVING A PH OF FROM ABOUT 0.0 TO 2.0.
Claim 2
Dependent Claim
118 words
A COMPOSITION FOR USE IN AQUEOUS SOLUTION TO IMPART A PROTECTIVE COATING TO MAGNESIUM ALLOY ARTICLES CONSISTING ESSENTIALLY OF A HEXAVALENT CHROMIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMIC ACID AND SALTS THEREOF IN AMOUNT OF ABOUT 14 TO 37%, A NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID AND SALTS THEREOF IN AMOUNT OF ABOUT 32 TO 70%, AND A CHLORIDE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID AND SALTS THEREOF IN AMOUNT OF ABOUT 4 TO 50%, THE FOREGOING PERCENT RANGES BEING CALCULATED ON THE BASIS OF THE TOTAL WEIGHT OF ACTIVE IONS PRESENT IN AN AQUEOUS SOLUTION CONTAINING SAID COMPOSITION AND HAVING A PH OF FROM ABOUT 0.0 TO 2.0.
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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |