Patent US2705196A successfully refreshed from Google Patents.
US2705196A
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Process for de-oxidizing a molten metal
Assignee: MANUFACTURERS CHEMICAL Corp
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Filing: 1952-02-20
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Granted: 1955-03-29
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Expires: 1972-02-20
Abstract
No abstract record available.
Inventors
- 👤 Wever Franz
- 👤 Koch Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:45
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12097; Y10T428/12222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A PROCESS FOR DEOXIDIZING MOLTEN IRON AND FERROUS ALLOYS, IN COMBINATION A SEQUENCE OF THE FOLLOWING STEPS: (A) PRE-DEOXIDIZING THE MOLTEN METAL WITH A DEOXIDIZING AGENT HAVING MODERATE AFFINITY TO OXYGEN; (B) ALLOWING THE MOLTEN METAL RESULTING FROM (A) TO STAND UNTIL OXIDE PRODUCTS FORMED FROM SAID DEOXIDIZING AGENT RISE TO THE SURFACE OF THE MOLTEN METAL; (C) INTRODUCING BELOW THE SURFACE TO THE MOLTEN METAL A DE-OXIDIZING AGENT OF HIGH AFFINITY TO OXYGEN IN A CONTAINER, CONSISTING OF A METAL WHICH IS ADAPTED TO MELT UPON ITS INTRODUCTION INTO THE MOLTEN METAL AND HAS NO OBJECTIONABLE EFFECT ON THE TREATED FERROUS METAL, SAID STEPS (B) AND (C) BEING CARRIED OUT IN THE SAME VESSEL FOR THE MOLTEN METAL.
Claim 2
Dependent Claim
120 words
IN A PROCESS FOR DEOXIDIZING MOLTEN IRON AND FERROUS ALLOYS, IN COMBINATION A SEQUENCE OF THE FOLLOWING STEPS: (A) PRE-DEOXIDIZING THE MOLTEN METAL WITH A DEOXIDIZING AGENT HAVING MODERATE AFFINITY TO OXYGEN; (B) ALLOWING THE MOLTEN METAL RESULTING FROM (A) TO STAND UNTIL OXIDE PRODUCTS FORMED FROM SAID DEOXIDIZING AGENT RISE TO THE SURFACE OF THE MOLTEN METAL; (C) INTRODUCING BELOW THE SURFACE TO THE MOLTEN METAL A DE-OXIDIZING AGENT OF HIGH AFFINITY TO OXYGEN IN A CONTAINER, CONSISTING OF A METAL WHICH IS ADAPTED TO MELT UPON ITS INTRODUCTION INTO THE MOLTEN METAL AND HAS NO OBJECTIONABLE EFFECT ON THE TREATED FERROUS METAL, SAID STEPS (B) AND (C) BEING CARRIED OUT IN THE SAME VESSEL FOR THE MOLTEN METAL.
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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) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |