Patent US2604394A successfully refreshed from Google Patents.
US2604394A
Expired / Lapsed
US
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Magnesium base alloys
Assignee: Magnesium Elektron Ltd
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Filing: 1949-10-08
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Granted: 1952-07-22
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Expires: 1969-10-08
Abstract
No abstract record available.
Inventors
- 👤 Edward F Emley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:52
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A COMPOSITION OF THE CHARACTER DESCRIBED FOR USE IN PRODUCING MAGNESIUM BASE ALLOYS, CONSISTING OF: 45 TO 65% OF AT LEAST ONE RARE EARTH METAL FLUORIDE, 12 TO 25% OF POTASSIUM FLUORIDE AND 20 TO 40% OF AT LEAST ONE ALKALI METAL CHLORIDE.
Claim 2
Dependent Claim
43 words
A COMPOSITION OF THE CHARACTER DESCRIBED FOR USE IN PRODUCING MAGNESIUM BASE ALLOYS, CONSISTING OF: 45 TO 65% OF AT LEAST ONE RARE EARTH METAL FLUORIDE, 12 TO 25% OF POTASSIUM FLUORIDE AND 20 TO 40% OF AT LEAST ONE ALKALI METAL CHLORIDE.
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) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |