Patent FR857756A successfully refreshed from Google Patents.
US2769705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of charging fine materials
Assignee: Elektrokemisk AS
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Filing: 1952-01-09
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Granted: 1956-11-06
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Expires: 1972-01-09
Abstract
No abstract record available.
Inventors
- 👤 Sem Mathias Ovrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:28
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/12; C22; C22B; C22B4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
THE METHOD OF OPERATING A CLOSED ELECTRIC SMELTING FURNACE FOR SMELTING MATERIALS OF THE TYPE ILLUSTRATED BY CARBIDE, FERRO-ALLOYS, PIG IRON AND THE LIKE, SAID FURNACE BEING OF THE TYPE IN WHICH THE ELECTRODES ARE ARRANGED IN A TRIANGLE, WHICH COMPRISES SCREENING MATERIAL TO BE TREATED TO REMOVE MATERIAL HAVING A DIAMETER SMALLER THAN ABOUT 4MM., CHARGING THE MATERIAL FROM WHICH SUCH FINER MATERIAL HAS BEEN REMOVED CONTINUOUSLY AROUND THE ELECTRODES AND CHARGING SUCH FINER MATERIAL INTO THE CENTRAL ZONE OF THE TRIANGLE DEFINED BY THE ELECTRODES SO THAT IT IS INTRODUCED RELATIVELY FAR FROM THE ELECTRODES SO THAT SPACED FROM THE COOLING ACTION OF THE SIDE WALLS AND MELTING SUCH FINDER MATERIAL RELATIVELY SLOWLY IN SUCH ZONE WHEREBY GASES ARE CAUSED TO EVOLVE RELATIVELY SLOWLY FROM SUCH FINER MATERIAL TO REDUCE THE TENDENCY OF SUCH GASES TO CAUSE ERUPTIONS.
Claim 2
Independent Claim
140 words
THE METHOD OF OPERATING A CLOSED ELECTRIC SMELTING FURNACE FOR SMELTING MATERIALS OF THE TYPE ILLUSTRATED BY CARBIDE, FERRO-ALLOYS, PIG IRON AND THE LIKE, SAID FURNACE BEING OF THE TYPE IN WHICH THE ELECTRODES ARE ARRANGED IN A TRIANGLE, WHICH COMPRISES SCREENING MATERIAL TO BE TREATED TO REMOVE MATERIAL HAVING A DIAMETER SMALLER THAN ABOUT 4MM., CHARGING THE MATERIAL FROM WHICH SUCH FINER MATERIAL HAS BEEN REMOVED CONTINUOUSLY AROUND THE ELECTRODES AND CHARGING SUCH FINER MATERIAL INTO THE CENTRAL ZONE OF THE TRIANGLE DEFINED BY THE ELECTRODES SO THAT IT IS INTRODUCED RELATIVELY FAR FROM THE ELECTRODES SO THAT SPACED FROM THE COOLING ACTION OF THE SIDE WALLS AND MELTING SUCH FINDER MATERIAL RELATIVELY SLOWLY IN SUCH ZONE WHEREBY GASES ARE CAUSED TO EVOLVE RELATIVELY SLOWLY FROM SUCH FINER MATERIAL TO REDUCE THE TENDENCY OF SUCH GASES TO CAUSE ERUPTIONS.
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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |