US3144330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electrical resistance iron-aluminum alloys
Assignee: Alloys Research and Manufacturing Corp
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Filing: 1960-08-26
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Granted: 1964-08-11
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Expires: 1980-08-26
Abstract
No abstract record available.
Inventors
- 👤 Storchheim Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; H; H01; H01B; H01B1/00; H01B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF MAKING ELECTRICAL RESISTANCE ALLOYS, COMPRISING THE STEPS OF PROVIDING A POWDER CONSISTING ESSENTIALLY OF 5% TO 30% BY WEIGHT OF ALUMINUM, UP TO 40% BY WEIGHT OF MANGANESE, AND THE REMAINDER OF IRON, SUBJECTING THE POWDER TO A TEMPERATURE ABOVE THE MELTING POINT OF ALUMINUM BUT BELOW THAT OF IRON TO EFFECT SINTERING IN THE LIQUID PHASE THEREBY TO FORM A SINTER
Claim 2
Independent Claim
65 words
A METHOD OF MAKING ELECTRICAL RESISTANCE ALLOYS, COMPRISING THE STEPS OF PROVIDING A POWDER CONSISTING ESSENTIALLY OF 5% TO 30% BY WEIGHT OF ALUMINUM, UP TO 40% BY WEIGHT OF MANGANESE, AND THE REMAINDER OF IRON, SUBJECTING THE POWDER TO A TEMPERATURE ABOVE THE MELTING POINT OF ALUMINUM BUT BELOW THAT OF IRON TO EFFECT SINTERING IN THE LIQUID PHASE THEREBY TO FORM A SINTER
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |