US2622049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing age-hardened magnesium-base alloy
Assignee: Mathieson Chemical Corp
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Filing: 1950-05-10
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Granted: 1952-12-16
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Expires: 1970-05-10
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Hesse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:15
CPC Classifications
C; C22; C22C; C22C23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE METHOD OF PRODUCING AN AGE-HARDENED MAGNESIUM-BASE ALLOY CONSISTING OF MAGNESIUM AND LITHIUM IN THE RATIO TO ONE ANOTHER OF 5:1 TO 10:1 AND AT LEAST ONE METAL OF THE GROUP CONSISTNG OF 4-10% ZINC, 4-24% CADMIUM, 0-12% SILVER AND 4-12% ALIMINUM AND HAVING A PRECIPITATED THETA PHASE WHICH COMPRISES HEATING THE ALLOY TO DISSOLVE AT LEAST A MAJOR PORTION OF THE THETA PHASE, QUENCHING THE ALLOY TO PREVENT PRECIPITATION OF THE THETA PHASE, A ND THEREAFTER HEATING THE QUENCHED ALLOY TO A TEMPERATURE ABOVE 150* F. BUT BELOW 300* F. TO PRECIPITATE AT LEAST A PART OF THE THETA PHASE T AGE-HARDEN THE ALLOY, SAID THETA PHASE BEING IDENTIFIED BY X-RAY DIFFRACTION PATTERN AS A FACE-CENTERED CUBIC STRUCTURE HAVING A LATTICE CONSTANT RANGING FROM 6.5 A. UNITS TO 6.92 A. UNITS.
Claim 2
Independent Claim
132 words
THE METHOD OF PRODUCING AN AGE-HARDENED MAGNESIUM-BASE ALLOY CONSISTING OF MAGNESIUM AND LITHIUM IN THE RATIO TO ONE ANOTHER OF 5:1 TO 10:1 AND AT LEAST ONE METAL OF THE GROUP CONSISTNG OF 4-10% ZINC, 4-24% CADMIUM, 0-12% SILVER AND 4-12% ALIMINUM AND HAVING A PRECIPITATED THETA PHASE WHICH COMPRISES HEATING THE ALLOY TO DISSOLVE AT LEAST A MAJOR PORTION OF THE THETA PHASE, QUENCHING THE ALLOY TO PREVENT PRECIPITATION OF THE THETA PHASE, A ND THEREAFTER HEATING THE QUENCHED ALLOY TO A TEMPERATURE ABOVE 150* F. BUT BELOW 300* F. TO PRECIPITATE AT LEAST A PART OF THE THETA PHASE T AGE-HARDEN THE ALLOY, SAID THETA PHASE BEING IDENTIFIED BY X-RAY DIFFRACTION PATTERN AS A FACE-CENTERED CUBIC STRUCTURE HAVING A LATTICE CONSTANT RANGING FROM 6.5 A. UNITS TO 6.92 A. UNITS.
References Cited (Backward Citations)
AT114437B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |