US3119688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manganese aluminum alloy for deoxidizing steel
Assignee: Republic Steel Corp
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Filing: 1960-09-13
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Granted: 1964-01-28
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Expires: 1980-09-13
Abstract
No abstract record available.
Inventors
- 👤 Rodgers William
- 👤 Andrew G Forrest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:04
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A PROCESS FOR PRODUCING A DEEP-DRAWING STEEL, THE STEP COMPRISING THE ADDITION TO SAID STEEL OF A MANGANESEALUMINUM ALLOY SUBSEQUENT TO TAPPING OF THE FURNACE AND WHILE SAID STEEL IS STILL IN A MOLTEN STATE, SAID ALLOY CONSISTING ESSENTIALLY OF AT LEAST ABOUT 50 PERCENT BY WEIGHT MANGANESE AND 25 PERCENT BY WEIGHT OF ALUMINUM, AND NO MORE THAN ABOUT 75 PERCENT BY WEIGHT OF MANGANESE AND 50 PERCENT BY WEIGHT OF ALUMINUM, SAID STEEL AND SAID ALLOY EACH CONTAINING PRIOR TO SAID ADDITION LESS THAN 0.01 PERCENT BY WEIGHT OF SILICON, AND SAID ALLOY BEING ADDED IN A FORM AT LEAST AS LARGE AS SHOT AND IN AN AMOUNT OF AT LEAST ABOUT 10 POUNDS AND NO MORE THAN ABOUT 20 POUNDS PER TON OF STEEL.
Claim 2
Dependent Claim
128 words
IN A PROCESS FOR PRODUCING A DEEP-DRAWING STEEL, THE STEP COMPRISING THE ADDITION TO SAID STEEL OF A MANGANESEALUMINUM ALLOY SUBSEQUENT TO TAPPING OF THE FURNACE AND WHILE SAID STEEL IS STILL IN A MOLTEN STATE, SAID ALLOY CONSISTING ESSENTIALLY OF AT LEAST ABOUT 50 PERCENT BY WEIGHT MANGANESE AND 25 PERCENT BY WEIGHT OF ALUMINUM, AND NO MORE THAN ABOUT 75 PERCENT BY WEIGHT OF MANGANESE AND 50 PERCENT BY WEIGHT OF ALUMINUM, SAID STEEL AND SAID ALLOY EACH CONTAINING PRIOR TO SAID ADDITION LESS THAN 0.01 PERCENT BY WEIGHT OF SILICON, AND SAID ALLOY BEING ADDED IN A FORM AT LEAST AS LARGE AS SHOT AND IN AN AMOUNT OF AT LEAST ABOUT 10 POUNDS AND NO MORE THAN ABOUT 20 POUNDS PER TON OF STEEL.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |