US3630726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium base alloys
Assignee: Magnesium Elektron Ltd
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Filing: 1969-06-24
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Granted: 1971-12-28
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Expires: 1989-06-24
Abstract
Abstract This invention provides magnesium base alloys having improved mechanical properties especially in the as cast state and consisting essentially, apart from impurities, of 6 to 12 percent by weight aluminum, from 0 to 3 percent by weight zinc, and at least 0.5 percent of each of silicon and manganese, the total content of silicon and manganese being 1.2 to 1.8 percent, and having a Mn/Si ratio of 0.6 to 1.5; balance magnesium.
Inventors
- 👤 Philip Andrew Fisher
- 👤 William Unsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:25
CPC Classifications
C; C22; C22C; C22C23/00; C22C23/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
18 words
A magnesium base alloy as claimed in claim 1 having a Mn/Si ratio of from 0.75 to 1.5.
Claim 2
Dependent Claim
19 words
A magnesium base alloy as claimed in claim 1 (or 2) wherein the manganese content is at least 0.55percent.
Claim 3
Dependent Claim
27 words
A magnesium base alloy as claimed in claim 1 (or 2) wherein the manganese content is 0.8 to 1.2 percent and silicon is 0.55 to 1.4 percent.
Claim 4
Dependent Claim
19 words
A magnesium base alloy as claimeD in any of claims 1 to 4 containing 0.25 to 1.0 percent zinc.
Claim 5
Dependent Claim
39 words
A magnesium base alloy as claimed in claim 1 containing 7 to 9 percent aluminum, 0.6 to 1.2 percent manganese, 0.6 to 1.2 percent silicon, 0 to 3 percent zinc, and having a Mn/Si ratio of 0.8 to 1.4.
Claim 6
Dependent Claim
60 words
A die-cast article of an alloy consisting essentially, apart from impurities, of 6 to 12 percent by weight aluminum, from 0 to 3 percent weight zinc, and at least 0.5 percent of each of silicon and manganese, the total content of silicon and manganese being 1.2 to 1.8 percent, and having a Mn/Si ratio of 0.6 to 1.5; balance 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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |