US3079452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of electrically-melted refractory products containing mineral oxides
Assignee: Societe Europeenne des Produits Refractaires SAS
•
Filing: 1959-07-02
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Granted: 1963-02-26
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Expires: 1979-07-02
Abstract
No abstract record available.
Inventors
- 👤 Grollier-Baron Therese
- 👤 Gaudin Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:58
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/32; C04B33/323; C04B35/00; C04B35/01; C04B35/48; C04B35/484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN THE ART OF PREPARING REFRACTORY AND LIKE PRODUCTS BY FUSION OF A CHARGE CONTAINING AT LEAST ONE MINERAL OXIDE IN AN ELECTRIC ARC FURNACE WHEREIN AN ARC IS CAUSED TO STRIKE BETWEEN AN ELECTRODE POSITIONED ABOVE A MOLTEN BATH OF SAID CHARGE AND SAID MOLTEN BATH, A METHOD COMPRISING THE CONCURRENT STEPS OF: OPERATING IN RENEWED OXIDIZING ATMOSPHERE ABOVE SAID MOLTEN BATH IN THE PATH OF SAID ARC, POSITIONING SAID ELECTRODE AT SUCH A DISTANCE ABOVE THE SURFACE OF SAID MOLTEN BATH THAT ARE THE PATH OF SAID ARE THROUGH SAID OXIDIZING ATMOSPHERE IS LONG ENOUGH TO INSURE SUBSTANTIALLY COMPLETE OXIDATION OF ANY REDUCING AGENT TRAVELING ALONG SAID PATH BEFORE SAID AGENT REACHES SAID BATH, AND SUBJECTING SAID BATH TO AGITATION.
Claim 2
Dependent Claim
122 words
IN THE ART OF PREPARING REFRACTORY AND LIKE PRODUCTS BY FUSION OF A CHARGE CONTAINING AT LEAST ONE MINERAL OXIDE IN AN ELECTRIC ARC FURNACE WHEREIN AN ARC IS CAUSED TO STRIKE BETWEEN AN ELECTRODE POSITIONED ABOVE A MOLTEN BATH OF SAID CHARGE AND SAID MOLTEN BATH, A METHOD COMPRISING THE CONCURRENT STEPS OF: OPERATING IN RENEWED OXIDIZING ATMOSPHERE ABOVE SAID MOLTEN BATH IN THE PATH OF SAID ARC, POSITIONING SAID ELECTRODE AT SUCH A DISTANCE ABOVE THE SURFACE OF SAID MOLTEN BATH THAT ARE THE PATH OF SAID ARE THROUGH SAID OXIDIZING ATMOSPHERE IS LONG ENOUGH TO INSURE SUBSTANTIALLY COMPLETE OXIDATION OF ANY REDUCING AGENT TRAVELING ALONG SAID PATH BEFORE SAID AGENT REACHES SAID BATH, AND SUBJECTING SAID BATH TO AGITATION.
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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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |