Patent US2698230A successfully refreshed from Google Patents.
US2698230A
Expired / Lapsed
US
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Magnesium base alloys containing zirconium
Assignee: Magnesium Elektron Ltd
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Filing: 1951-02-12
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Granted: 1954-12-28
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Expires: 1971-02-12
Abstract
No abstract record available.
Inventors
- 👤 Doyle William Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:48
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
PROCESS FOR ALLOYING OF ZIRCONIUM WITH MAGNESIUM, COMPRISING INTIMATELY MIXTURE IN THE BOTTOM OF A WARM CRUCIBLE APPROXIMATELY ONE PART BY WEIGHT OF PREVIOUSLY DRIED POTASSIUM FLUORIDE AND TWO PARTS BY WEIGHT OF ZIRCONIUM TETRACHLORIDE IN AN AMOUNT CALCULATED ON THE BASIS OF USING BETWEEN 5 AND 25% OF THE TOTAL ZIRCONIUM TETRACHLORIDE IN THE FINAL SALT FOR THIS PURPOSE, THAN ADDING TO SAID BOTTOM LAYER SUCCESSIVE THIN ALTERNATE LAYERS OF ZIRCONIUM TETRACHLORIDE AND POTASSIUM FLUORIDE, WHILE LEAVING FOR THE TOP LAYER A SMALL AMOUNT OF THE POTASSIUM FLUORIDE CONTENT, CLOSING SAID CRUCIBLE EXCEPT FOR A VENT HOLE, GENTLY HEATING UNTIL EXOTHERMIC REACTION OCCURS, WITH THE PRODUCTION OF A MOLTEN MASS, THAN STIRRING INTO THE MOLTEN MASS THE TOP LAYER OF POTASSIUM FLUORIDE TURE COMPRISING A FUSED MIXTURE OF ZIRCONIUM TETRACHLORIDE AND POTASSIUM FLUORIDE, IN WHICH THE CONTENT OF ZIRCONIUM TETRACHLORIDE RANGE BETWEEN 0.75 AND 4 PARTS BY WEIGHT, PER ONE PART OF POTASSIUM FLUORIDE, AND INTIMATELY MIXING SAID SALT MIXTURE WITH MOLTEN MAGNESIUM.
Claim 2
Dependent Claim
164 words
PROCESS FOR ALLOYING OF ZIRCONIUM WITH MAGNESIUM, COMPRISING INTIMATELY MIXTURE IN THE BOTTOM OF A WARM CRUCIBLE APPROXIMATELY ONE PART BY WEIGHT OF PREVIOUSLY DRIED POTASSIUM FLUORIDE AND TWO PARTS BY WEIGHT OF ZIRCONIUM TETRACHLORIDE IN AN AMOUNT CALCULATED ON THE BASIS OF USING BETWEEN 5 AND 25% OF THE TOTAL ZIRCONIUM TETRACHLORIDE IN THE FINAL SALT FOR THIS PURPOSE, THAN ADDING TO SAID BOTTOM LAYER SUCCESSIVE THIN ALTERNATE LAYERS OF ZIRCONIUM TETRACHLORIDE AND POTASSIUM FLUORIDE, WHILE LEAVING FOR THE TOP LAYER A SMALL AMOUNT OF THE POTASSIUM FLUORIDE CONTENT, CLOSING SAID CRUCIBLE EXCEPT FOR A VENT HOLE, GENTLY HEATING UNTIL EXOTHERMIC REACTION OCCURS, WITH THE PRODUCTION OF A MOLTEN MASS, THAN STIRRING INTO THE MOLTEN MASS THE TOP LAYER OF POTASSIUM FLUORIDE TURE COMPRISING A FUSED MIXTURE OF ZIRCONIUM TETRACHLORIDE AND POTASSIUM FLUORIDE, IN WHICH THE CONTENT OF ZIRCONIUM TETRACHLORIDE RANGE BETWEEN 0.75 AND 4 PARTS BY WEIGHT, PER ONE PART OF POTASSIUM FLUORIDE, AND INTIMATELY MIXING SAID SALT MIXTURE WITH MOLTEN MAGNESIUM.
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) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |