US2679683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous metal element
Assignee: Motors Liquidation Co
•
Filing: 1949-12-15
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Granted: 1954-06-01
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Expires: 1969-12-15
Abstract
No abstract record available.
Inventors
- 👤 Jr William A Luther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:26
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F2998/00; B22F2998/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12181; Y10T428/12479; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A HIGHLY POROUS METAL ELEMENT OF THE CLASS DESCRIBED, CONSISTING OF A POROUS CUPREOUS ALLOY SKELETON HAVING COPPER AS ITS MAJOR COMPONENT AND INCLUDING COMPLETELY SEPARATED FERROUS PARTICLES INTERSPERSED THROUGH SAID SKELETON, EACH OF SAID FERROUS PARTICLE BEING COMPLETELY COATED WITH AND FULLY SEPARATED BY SAID CUPREOUS ALLOY WHEREIN SAID FERROUS PARTICLES MAKE UP TO FROM 84 TO 90.5% BY WEIGHT OF THE ELEMENT, SAID ELEMENT BEING FORMED FROM NON-COMPACTED FERROUS PARTICLES WHEREIN EACH PARTICLE INCLUDES AN INNER LAYER OF COPPER AND AN OUTER LAYER OF A LOWER MELTING POINT METAL READILY ALLOYABLE WITH COPPER AND SINTERED AT A TEMPERATURE ABOVE THE MELTING POINT OF THE READILY ALLOYABLE METAL AND BELOW THE MELTING POINT OF COPPER FOR FORMING THE CUPREOUS ALLOY IN SITU DURING THE SINTERING OPERATION.
Claim 2
Dependent Claim
127 words
A HIGHLY POROUS METAL ELEMENT OF THE CLASS DESCRIBED, CONSISTING OF A POROUS CUPREOUS ALLOY SKELETON HAVING COPPER AS ITS MAJOR COMPONENT AND INCLUDING COMPLETELY SEPARATED FERROUS PARTICLES INTERSPERSED THROUGH SAID SKELETON, EACH OF SAID FERROUS PARTICLE BEING COMPLETELY COATED WITH AND FULLY SEPARATED BY SAID CUPREOUS ALLOY WHEREIN SAID FERROUS PARTICLES MAKE UP TO FROM 84 TO 90.5% BY WEIGHT OF THE ELEMENT, SAID ELEMENT BEING FORMED FROM NON-COMPACTED FERROUS PARTICLES WHEREIN EACH PARTICLE INCLUDES AN INNER LAYER OF COPPER AND AN OUTER LAYER OF A LOWER MELTING POINT METAL READILY ALLOYABLE WITH COPPER AND SINTERED AT A TEMPERATURE ABOVE THE MELTING POINT OF THE READILY ALLOYABLE METAL AND BELOW THE MELTING POINT OF COPPER FOR FORMING THE CUPREOUS ALLOY IN SITU DURING THE SINTERING OPERATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |