US2979398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium-base alloy
Assignee: Dow Chemical Co
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Filing: 1958-07-03
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Granted: 1961-04-11
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Expires: 1978-07-03
Abstract
No abstract record available.
Inventors
- 👤 George S Foerster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:20
CPC Classifications
C; C22; C22C; C22C23/00; C22C23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A MAGNESIUM-BASE ALLOY CONSISTING OF FROM 1.5 TO 3.0 PERCENT OF ZINC, RARE EARTH METAL IN AN AMOUNT IN PERCENT BY WEIGHT WHICH IS FORM 0.04 TO 0.2 OF THE ZINC PERCENTAGE, SAID RARE EARTH METAL BEING SELECTED FROM THE GROUP CONSISTING OF CERIUM, LANTHANIUM, PREASEODYMIUM, NEODYMIUM, MISCH METAL, AND MIXTURES THEREOF, FROM 0.2 TO 0.8 PERCENT OF ZIRONIUM WHICH IS SOLUBLE IN HYDROCHLORIC ACID ON SUBJECTING THE ALLOY TO THE DISSOLVING ACTION OF THE ACID, AND THE BALANCE MAGNESIUM.
Claim 2
Dependent Claim
80 words
A MAGNESIUM-BASE ALLOY CONSISTING OF FROM 1.5 TO 3.0 PERCENT OF ZINC, RARE EARTH METAL IN AN AMOUNT IN PERCENT BY WEIGHT WHICH IS FORM 0.04 TO 0.2 OF THE ZINC PERCENTAGE, SAID RARE EARTH METAL BEING SELECTED FROM THE GROUP CONSISTING OF CERIUM, LANTHANIUM, PREASEODYMIUM, NEODYMIUM, MISCH METAL, AND MIXTURES THEREOF, FROM 0.2 TO 0.8 PERCENT OF ZIRONIUM WHICH IS SOLUBLE IN HYDROCHLORIC ACID ON SUBJECTING THE ALLOY TO THE DISSOLVING ACTION OF THE ACID, AND THE BALANCE MAGNESIUM.
References Cited (Backward Citations)
CA540879A
Cited
US2549955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |