US3205069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminium-copper alloys
Assignee: International Alloys Ltd
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Filing: 1962-01-24
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Granted: 1965-09-07
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 Wood John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:13
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
AN ALUMINIUM BASE ALLOY HAVING THE CHARACTERISTIC THAT, DURING CASTING THEREOF A TOUGH AND THICK SKIN DOES NOT FORM ON THE MOLTEN SURFACE, SAID ALLOY BEING COMPOSED OF: (A) COPPER IN ANN AMOUNT ABOUT 3% BY WEIGHT; (B) MAGNESIUM IN AN AMOUNT ABOUT 0.5% BY WEIGHT; (C) ANTIMONY IN AN AMOUNT ABOUT 0.6% BY WEIGHT; (D) TIN IN AN AMOUNT ABOUT 0.15% BY WEIGHT; AND (E) BERYLLIUM IN AN AMOUNT ABOUT 0.004% BY WEIGHT; THE BALANCE BEING ALUMINIUM.
Claim 2
Dependent Claim
78 words
AN ALUMINIUM BASE ALLOY HAVING THE CHARACTERISTIC THAT, DURING CASTING THEREOF A TOUGH AND THICK SKIN DOES NOT FORM ON THE MOLTEN SURFACE, SAID ALLOY BEING COMPOSED OF: (A) COPPER IN ANN AMOUNT ABOUT 3% BY WEIGHT; (B) MAGNESIUM IN AN AMOUNT ABOUT 0.5% BY WEIGHT; (C) ANTIMONY IN AN AMOUNT ABOUT 0.6% BY WEIGHT; (D) TIN IN AN AMOUNT ABOUT 0.15% BY WEIGHT; AND (E) BERYLLIUM IN AN AMOUNT ABOUT 0.004% BY WEIGHT; THE BALANCE BEING ALUMINIUM.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |