Patent US2497539A successfully refreshed from Google Patents.
US2497539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and flux for the treatment of light metals
Assignee: Magnesium Elektron Ltd
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Filing: 1947-08-25
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Granted: 1950-02-14
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Expires: 1967-08-25
Abstract
No abstract record available.
Inventors
- 👤 Emley Edward Frederick
- 👤 Jessup Alfred Claude
- 👤 Junction Clifton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:45
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/20; C22B26/22; C22B9/00; C22B9/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
IN MELTING MAGNESIUM BASE ALLOYS CONTAINING ZIRCONIUM, MELTING THE MAGNESIUM-ZIRCONIUM IN CRUCIBLES AND EFFECTING SEPARATION OF CHLORIDE INCLUSION AND PROTECTING THE ALLOY AGAINST OXIDATION BY A FLUX CONSISTING ESSENTIALLY OF AT LEAST TWO CHLORIDES OF THE CLASS CONSISTING OF THE CHLORIDES OF THE ALKALI AND ALKALINE EARTH METALS, AT LEAST ONE OF THE AFORESAID CHLORIDES BEING MAGNESIUM CHLORIDE, AND ANOTHER BEING SELECTED FROM THE GROUP CONSISTING OF BARIUM CHLORIDE AND STRONTIUM CHLORIDE IN QUANTITY AT LEAST EQUIVALENT TO 25 PER CENT BARIUM CHLORIDE RECKONING 1 PER CENT OF STRONTIUM CHLORIDE EQUIVALENT TO 0.7 PER CENT OF BARIUM CHLORIDE, SAID FLUX INCLUDING NOT MORE THAN 5 PER CENT OF INSPISSATING AGENTS AND HAVING A SPECIFIC GRAVITY OF AT LEAST 2.05 AT 800* C., THE LIQUIDUS TEMPERATURE OF THE FLUX AS A WHOLE BEING NOT GREATER THAN 610*C.
Claim 2
Dependent Claim
136 words
IN MELTING MAGNESIUM BASE ALLOYS CONTAINING ZIRCONIUM, MELTING THE MAGNESIUM-ZIRCONIUM IN CRUCIBLES AND EFFECTING SEPARATION OF CHLORIDE INCLUSION AND PROTECTING THE ALLOY AGAINST OXIDATION BY A FLUX CONSISTING ESSENTIALLY OF AT LEAST TWO CHLORIDES OF THE CLASS CONSISTING OF THE CHLORIDES OF THE ALKALI AND ALKALINE EARTH METALS, AT LEAST ONE OF THE AFORESAID CHLORIDES BEING MAGNESIUM CHLORIDE, AND ANOTHER BEING SELECTED FROM THE GROUP CONSISTING OF BARIUM CHLORIDE AND STRONTIUM CHLORIDE IN QUANTITY AT LEAST EQUIVALENT TO 25 PER CENT BARIUM CHLORIDE RECKONING 1 PER CENT OF STRONTIUM CHLORIDE EQUIVALENT TO 0.7 PER CENT OF BARIUM CHLORIDE, SAID FLUX INCLUDING NOT MORE THAN 5 PER CENT OF INSPISSATING AGENTS AND HAVING A SPECIFIC GRAVITY OF AT LEAST 2.05 AT 800* C., THE LIQUIDUS TEMPERATURE OF THE FLUX AS A WHOLE BEING NOT GREATER THAN 610*C.
Claim 3
Dependent Claim
93 words
A FLUX FOR TREATING MAGNESIUM ALLOYS CONTAINING ZIRCONIUM WHICH CONSISTS OF MAGNESIUM CHLORIDE, AT LEAST ONE CHLORIDE FROM THE CLASS CONSISTING OF SODIUM CHLORIDE AND POTASSIUM CHLORIDE, AND AT LEAST ONE CHLORIDE OF THE CLASS CONSISTING OF BARIUM CHLORIDE AND STRONTIUM CHLORIDE IN QUANTITY AT LEAST EQUIVALENT TO 25 PER CENT BARIUM CHLORIDE RECKONING 1 PER CENT STRONTIUM CHLORIDE EQUIVALENT TO 0.7 PER CENT OF BARIUM CHLORIDE, SAID FLUX HAVING A SPECIFIC GRAVITY OF AT LEAST 2.05 AT 800*C., THE LIQUIDS TEMPERATURE OF THE FLUX AS A WHOLE BEING NOT GREATER THAN 610*C.
Claim 4
Dependent Claim
93 words
A FLUX FOR TREATING MAGNESIUM ALLOYS CONTAINING ZIRCONIUM WHICH CONSISTS OF MAGNESIUM CHLORIDE, AT LEAST ONE CHLORIDE FROM THE CLASS CONSISTING OF SODIUM CHLORIDE AND POTASSIUM CHLORIDE, AND AT LEAST ONE CHLORIDE OF THE CLASS CONSISTING OF BARIUM CHLORIDE AND STRONTIUM CHLORIDE IN QUANTITY AT LEAST EQUIVALENT TO 25 PER CENT BARIUM CHLORIDE RECKONING 1 PER CENT STRONTIUM CHLORIDE EQUIVALENT TO 0.7 PER CENT OF BARIUM CHLORIDE, SAID FLUX HAVING A SPECIFIC GRAVITY OF AT LEAST 2.05 AT 800*C., THE LIQUIDS TEMPERATURE OF THE FLUX AS A WHOLE BEING NOT GREATER THAN 610*C.
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) | 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 |