US2963780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum alloy powder product
Assignee: Alcoa Corp
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Filing: 1957-05-08
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Granted: 1960-12-13
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Expires: 1977-05-08
Abstract
No abstract record available.
Inventors
- 👤 Jr John P Lyle
- 👤 Raymond J Towner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:56
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/0408; C22C1/0416
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
A HOT WORKED ALLUMINUM BASE ALLOY POWDER ARTICLE FREE FROM ALUMINUM OXIDE EXCEPT AS AN INCIDENTAL IMPURITY, AND FORMED FROM ATOMIZED POWDER OF AN ALUMINUM BASE ALLOY CONTAINING AT LEAST 70% BY WEIGHT ALUMINUM AND FROM 2.5 TO 20% BY WEIGHT IRON AS THE ESSENTIAL COMPONENTS, THE IRON-CONTAINING CONSTITUENT IN THE HOT WORKED ARTICLE BEING PRESENT IN THE FORM OF FINELY DIVIDED UNIFORMLY DISTRIBUTED INSOLUBLE PARTICLES HAVING A MAXIMUM THICKNESS OF 0.4 MICRON, SAID ALLOY BEING SUBSTANTIALLY FREE FROM ELEMENTS WHICH FORM SOLID SOLUTIONS WITH ALUMINUM, EXCEPT AS THEY OCCUR AS IMPURITIES, SAID HOT WORKED ARTICLE BEING CHARACTERIZED IN THE AS-WORKED CONDITION BY A TENSILE STRENGTH AT 600*F. AFTER A 100-HOUR EXPOSURE OF NOT LESS THAN 15,00 P.S.I. ANDA YIELD STRENGTH OF NOT LESS THAN 12,000 P.S.I.
References Cited (Backward Citations)
US2287251A
Cited
US2809891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |