US2574318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum alloy
Assignee: Vereinigte Deutsche Metallwerke AG
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Filing: 1949-09-09
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Granted: 1951-11-06
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Expires: 1969-09-09
Abstract
No abstract record available.
Inventors
- 👤 Burkhardt Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:10
CPC Classifications
C; C22; C22C; C22C21/00; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; F16C2204/00; F16C2204/20; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12701; Y10T428/12736; Y10T428/1275; Y10T428/12757
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
AN ALLOY CONSISTING OF 0.5 TO 3% OF CALCIUM, 0.5 TO 3% OF IRON, AND THE REMAINDER ALUMINUM.
Claim 2
Dependent Claim
18 words
AN ALLOY CONSISTING OF 0.5 TO 3% OF CALCIUM, 0.5 TO 3% OF IRON, AND THE REMAINDER ALUMINUM.
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) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |