US3181343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and arrangement for measuring continuously the change of the carbon content of a bath of molten metal
Assignee: Institut de Recherches de la Siderurgie Francaise IRSID
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Filing: 1962-07-24
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Granted: 1965-05-04
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Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Fillon Jacques Dumont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:08
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4673; G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/37; G01N33/00; G01N33/20; G01N33/202; G01N33/2022; G01N33/2025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A METHOD OF MEASURING CONTINOUSLY THE CHANGE OF THE CARBON CONTENT OF A BATH OF MOLTEN METAL DURING DECARBURIZATION THEREOF IN A DECARBURIZATION VESSEL UNDER FORMATION OF CO AND CO2 IN THE ABSENCE OF COMBUSTION OF THE CO SUBSEQUENT TO ITS FORMATION, SAID BATH OF KNOWN WEIGHT HAVING A KNOWN INITIAL CARBON CONTENT, COMPRISING THE STEPS OF: CONTINOUSLY AUTOMATICALLY DETERMINING THE AMOUNT OF GASES PER UNIT OF TIME LEAVING SAID VESSEL IN SAID DECARBURIZATION PROCESS; CONTINUOUSLY AUTOMATICALLY DETERMINING THE CO AND CO2 CONTENT OF SAID GASES; AND CONTINOUSLY DETERMINING, BY CONTINUOUS INTEGRATION OF THE CONTENT OF CO AND CO2 IN SAID AMOUNTS OF GASES OVER A PERIOD OF TIME BEGINNING WITH THE START OF THE DECARBURIZATION PROCESS, THE CORRESONDING TOTAL AMOUNT OF CARBON REMOVED FROM THE BATH OF MOLTEN METAL DURING SUCH PERIOD OF TIME, THE DIFFERENCE BETWEEN SAID TOTAL AMOUNT OF REMOVED CARBON AND THE INITIAL CARBON CONTENT OF THE BATH BEING AN INDICATION OF THE CARBON CONTENT STILL PRESENT IN THE METAL BATH AT THE END OF SAID PERIOD OF TIME.
Claim 2
Independent Claim
173 words
A METHOD OF MEASURING CONTINOUSLY THE CHANGE OF THE CARBON CONTENT OF A BATH OF MOLTEN METAL DURING DECARBURIZATION THEREOF IN A DECARBURIZATION VESSEL UNDER FORMATION OF CO AND CO2 IN THE ABSENCE OF COMBUSTION OF THE CO SUBSEQUENT TO ITS FORMATION, SAID BATH OF KNOWN WEIGHT HAVING A KNOWN INITIAL CARBON CONTENT, COMPRISING THE STEPS OF: CONTINOUSLY AUTOMATICALLY DETERMINING THE AMOUNT OF GASES PER UNIT OF TIME LEAVING SAID VESSEL IN SAID DECARBURIZATION PROCESS; CONTINUOUSLY AUTOMATICALLY DETERMINING THE CO AND CO2 CONTENT OF SAID GASES; AND CONTINOUSLY DETERMINING, BY CONTINUOUS INTEGRATION OF THE CONTENT OF CO AND CO2 IN SAID AMOUNTS OF GASES OVER A PERIOD OF TIME BEGINNING WITH THE START OF THE DECARBURIZATION PROCESS, THE CORRESONDING TOTAL AMOUNT OF CARBON REMOVED FROM THE BATH OF MOLTEN METAL DURING SUCH PERIOD OF TIME, THE DIFFERENCE BETWEEN SAID TOTAL AMOUNT OF REMOVED CARBON AND THE INITIAL CARBON CONTENT OF THE BATH BEING AN INDICATION OF THE CARBON CONTENT STILL PRESENT IN THE METAL BATH AT THE END OF SAID PERIOD OF TIME.
References Cited (Backward Citations)
US2977217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |