US3758298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing graphitic aluminum castings
Assignee: Motors Liquidation Co
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Filing: 1970-07-02
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Granted: 1973-09-11
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Expires: 1990-07-02
Abstract
Abstract A METHOD OF PRODUCING GRAPHITIC ALUMINUM CASTINGS COMPRISING FIRST REACTING NICKEL COATED GRAPHITE POWDER WITH ALUMINUM AT AN ELEVATED TEMPERATURE IN A NONOXIDIZING ENVIRONMENT TO FORM ON COOLING A BRIQUET CONSISTING ESSENTIALLY OF GRAPHITE PARTICLES AND A DISCRETE NICKEL ALUMINIDE INTERMETALLIC PHASE IN AN ALUMINUM MATRIX AND THEN IMMERSING THE BRIQUET IN AN ALUMINUM MELT WHEREBY THE BRIQUET MELTS AND THE GRAPHITE PARTICLES BECOME SUSPENDED IN THE MOLTEN ALUMINUM. THE ALUMINUM MELT HAVING A PREDETERMINED QUANTITY OF GRAPHITE DISPERSED THEREIN IS THEREAFTER CAST TO FORM A GRAPHITIC ALUMINUM CASTING.
Inventors
- 👤 R Eppich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/026; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/12493; Y10T428/12535; Y10T428/12625
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |