Patent US2946676A successfully refreshed from Google Patents.
US2946676A
Expired / Lapsed
US
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Ferrochromium-aluminum alloy
Assignee: Union Carbide Corp
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Filing: 1957-04-29
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Granted: 1960-07-26
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Expires: 1977-04-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Brennan
- 👤 Earle R Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:06
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/06; C22B; C22B5/00; C22B5/02; C22B5/04; C22B5/06; C22C1/00; C22C1/02; C22C1/03; C22C21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN THE MANUFACTURE OF AN ALLOY STEEL EMPLOYING AN EXOTHERMIC REACTION MIXTURE AS AN ADDITIVE MATERIAL THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN SAID MIXTURE AN ALLOY HAVING ALUMINUM AS AN EXOTHERMIC REDUCING AGENT THEREIN, THE ALLOY COMPRISING FROM 5% TO 85% ALUMINUM, 5% TO 70% CHROMIUM, SILICON IN AN AMOUNT UP TO 30%, CARBON IN AN AMOUNT UP TO 5% AND THE REMAINDER IRON, THE RATIO OF SAID CHROMIUM TO SAID IRON BEING AT LEAST 1.5 TO 1 AND NOT MORE THAN 4 TO 1.
Claim 2
Dependent Claim
85 words
IN THE MANUFACTURE OF AN ALLOY STEEL EMPLOYING AN EXOTHERMIC REACTION MIXTURE AS AN ADDITIVE MATERIAL THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN SAID MIXTURE AN ALLOY HAVING ALUMINUM AS AN EXOTHERMIC REDUCING AGENT THEREIN, THE ALLOY COMPRISING FROM 5% TO 85% ALUMINUM, 5% TO 70% CHROMIUM, SILICON IN AN AMOUNT UP TO 30%, CARBON IN AN AMOUNT UP TO 5% AND THE REMAINDER IRON, THE RATIO OF SAID CHROMIUM TO SAID IRON BEING AT LEAST 1.5 TO 1 AND NOT MORE THAN 4 TO 1.
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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |