Patent US1443091A successfully refreshed from Google Patents.
Patent US3058822A successfully refreshed from Google Patents.
US3058822A
Expired / Lapsed
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Method of making additions to molten metal
Assignee: Centre Technique Des Industries De La Fonderie
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Filing: 1960-04-12
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Granted: 1962-10-16
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Expires: 1980-04-12
Abstract
No abstract record available.
Inventors
- 👤 Volianik Nicolas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:25
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/0025; C21C1/00; C21C7/0037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A METALLURGICAL PROCESS FOR INCREASING THE CONTENT OF AT LEAST ONE OF THE ELEMENTS CARBON AND SILICON IN A MOLTEN IRON CONTAINING BATH BY AN AMOUNT RANGING FROM ABOUT 0.5 PERCENT TO ABOUT 4 PERCENT OF THE BATH, THE STEPS OF PLACING SAID ELEMENT ON THE SURFACE OF THE BATH, AND DISCHARGING GAS THROUGH THE BATH AT A RATE AND FOR A TIME SUFFICIENT TO CAUSE VIOLENT AGITATION AND TURBULENCE IN THE BATH AND THEREBY CAUSE SAID ELEMENT TO BE COMPLETELY SURROUNDED AND COATED WITH MOLTEN METAL, SAID GAS BEING AT LEAST IN PART AN INERT GAS SO AS TO DETER OXIDATION OF THE ADDED ELEMENT.
Claim 2
Dependent Claim
107 words
IN A METALLURGICAL PROCESS FOR INCREASING THE CONTENT OF AT LEAST ONE OF THE ELEMENTS CARBON AND SILICON IN A MOLTEN IRON CONTAINING BATH BY AN AMOUNT RANGING FROM ABOUT 0.5 PERCENT TO ABOUT 4 PERCENT OF THE BATH, THE STEPS OF PLACING SAID ELEMENT ON THE SURFACE OF THE BATH, AND DISCHARGING GAS THROUGH THE BATH AT A RATE AND FOR A TIME SUFFICIENT TO CAUSE VIOLENT AGITATION AND TURBULENCE IN THE BATH AND THEREBY CAUSE SAID ELEMENT TO BE COMPLETELY SURROUNDED AND COATED WITH MOLTEN METAL, SAID GAS BEING AT LEAST IN PART AN INERT GAS SO AS TO DETER OXIDATION OF THE ADDED ELEMENT.
References Cited (Backward Citations)
US585036A
Cited
US1809437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |