Patent US2809891A successfully refreshed from Google Patents.
US2809891A
Expired / Lapsed
US
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Method of making articles from aluminous metal powder
Assignee: Alcoa Corp
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Filing: 1954-10-12
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Granted: 1957-10-15
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Expires: 1974-10-12
Abstract
No abstract record available.
Inventors
- 👤 William T Ennor
- 👤 Jr John P Lyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:30
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/12; B22F3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE MOTHED OF MAKING A WROUGHT PRODUCT FROM ALUMINOUS METAL POWDER OF LESS THAN 35 MESH SIZE COMPRISING INTIALLY FORMING A PARTIALLY CONSOLIDATION COMPACT OF SAID POWDER BY COMPRESSING A LOOSE MASS OF SAID POWDER UNDER A PRESSURE OF LESS THAN 1,000LBS./SQ.IN. AT A TEMPERATURE BETWEEN 840*F. AND THE TEMPERATURE AT WHICH THE METAL BECOMES COMPLETELY MOLTEN UNTIL THE COMPRESSED MASS ATTAINS A DENSITY OF AT LEAST 30% OF THAT OF THE SOLID METAL, AND THEREAFTER WORKING SAID COMPACT INTO THE FINISHED SHAPED.
Claim 2
Dependent Claim
83 words
THE MOTHED OF MAKING A WROUGHT PRODUCT FROM ALUMINOUS METAL POWDER OF LESS THAN 35 MESH SIZE COMPRISING INTIALLY FORMING A PARTIALLY CONSOLIDATION COMPACT OF SAID POWDER BY COMPRESSING A LOOSE MASS OF SAID POWDER UNDER A PRESSURE OF LESS THAN 1,000LBS./SQ.IN. AT A TEMPERATURE BETWEEN 840*F. AND THE TEMPERATURE AT WHICH THE METAL BECOMES COMPLETELY MOLTEN UNTIL THE COMPRESSED MASS ATTAINS A DENSITY OF AT LEAST 30% OF THAT OF THE SOLID METAL, AND THEREAFTER WORKING SAID COMPACT INTO THE FINISHED SHAPED.
References Cited (Backward Citations)
US2287251A
Cited
US2290734A
Cited
US2391752A
Cited
GB573113A
Cited
GB625364A
Cited
GB706528A
Cited
GB706536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |