Patent US2497529A successfully refreshed from Google Patents.
US2497529A
Expired / Lapsed
US
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Process for production of magnesium base alloys containing zirconium
Assignee: Magnesium Elektron Ltd
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Filing: 1946-03-08
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Granted: 1950-02-14
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Expires: 1966-03-08
Abstract
No abstract record available.
Inventors
- 👤 Charles J P Ball
- 👤 Francis A Fox
- 👤 Jessup Alfred Claude
- 👤 Emley Edward Frederick
- 👤 Works Clifton Junction
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:43
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR THE PRODUCTION OF MAGNESIUM BASE ALLOYS CONTAINING ZIRCONIUM COMPRISING REACTING MOLTEN MAGNESIUM, IN THE ABSENCE OF ANY APPRECIABLE QUANTITY OF ALUMINUM, SILICON, MANGANESE, COBALT, NICKEL, TIN AND ANTIMONY, WITH A SUBSTANCE CONSISTING OF AT LEAST 5% OF ZIRCONIUM IN THE FORM OF ZIRCONIUM FLUORIDE TOGETHER WITH AT LEAST TWO OF THE FLUORIDES OF LITHIUM, BARIUM, STRONTIUM, CALCIUM, AND MAGNESIUM, SAID FLUORIDES BEING PRESENT IN QUANTITIES RELATIVE TO EACH OTHER TO CAUSE THE FLUORIDES BOTH WITH AND WITHOUT THE MAGNESIUM FLUORIDE PRODUCED DURING ALLOYING TO BE FLUID AT THE ALLOYING TEMPERATURE BETWEEN 750*C. AND 900*C.
Claim 2
Dependent Claim
97 words
A PROCESS FOR THE PRODUCTION OF MAGNESIUM BASE ALLOYS CONTAINING ZIRCONIUM COMPRISING REACTING MOLTEN MAGNESIUM, IN THE ABSENCE OF ANY APPRECIABLE QUANTITY OF ALUMINUM, SILICON, MANGANESE, COBALT, NICKEL, TIN AND ANTIMONY, WITH A SUBSTANCE CONSISTING OF AT LEAST 5% OF ZIRCONIUM IN THE FORM OF ZIRCONIUM FLUORIDE TOGETHER WITH AT LEAST TWO OF THE FLUORIDES OF LITHIUM, BARIUM, STRONTIUM, CALCIUM, AND MAGNESIUM, SAID FLUORIDES BEING PRESENT IN QUANTITIES RELATIVE TO EACH OTHER TO CAUSE THE FLUORIDES BOTH WITH AND WITHOUT THE MAGNESIUM FLUORIDE PRODUCED DURING ALLOYING TO BE FLUID AT THE ALLOYING TEMPERATURE BETWEEN 750*C. AND 900*C.
References Cited (Backward Citations)
US1437984A
Cited
GB489700A
Cited
US2250687A
Cited
US2235508A
Cited
US2267862A
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US2261906A
Cited
US2452894A
Cited
US2452914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |