US2949430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the protection of carbon electrodes for electric furnaces
Assignee: Ardal og Sunndal Verk AS
•
Filing: 1957-08-02
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Granted: 1960-08-16
•
Expires: 1977-08-02
Abstract
No abstract record available.
Inventors
- 👤 Jorgensen Rolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:49
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C3/12; C25C3/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
PROCESS FOR THE PROTECTION OF CARBON ELECTRODES FOR ELECTRIC FURNACES TO PREVENT LOSS OF BURNING COMPRISING ADDING BORIC ACID IN AMOUNT OF 0.2* TO 1*, BASED ON THE WEIGHT OF THE ELECTRODE MASS, TO THE CARBON-CONTAINING RAW MATERIALS FOR THE ELECTRODE MASS, MIXING AND EVENLY DISTRIBUTING THE BORIC ACID IN SAID RAW MATERIALS AND INTRODUCING THE OBTAINED MIXTURE INTO AN ELECTRODE CASING USED FOR PRODUCING CONTAINUOUS, SELF-BAKING ELECTRODES WHERE THE BAKING TAKES PLACE IN THE ELECTRODE ITSELF AS THE MASS ENTERS THE HOT PART OF THE FURNACE.
Claim 2
Dependent Claim
87 words
PROCESS FOR THE PROTECTION OF CARBON ELECTRODES FOR ELECTRIC FURNACES TO PREVENT LOSS OF BURNING COMPRISING ADDING BORIC ACID IN AMOUNT OF 0.2* TO 1*, BASED ON THE WEIGHT OF THE ELECTRODE MASS, TO THE CARBON-CONTAINING RAW MATERIALS FOR THE ELECTRODE MASS, MIXING AND EVENLY DISTRIBUTING THE BORIC ACID IN SAID RAW MATERIALS AND INTRODUCING THE OBTAINED MIXTURE INTO AN ELECTRODE CASING USED FOR PRODUCING CONTAINUOUS, SELF-BAKING ELECTRODES WHERE THE BAKING TAKES PLACE IN THE ELECTRODE ITSELF AS THE MASS ENTERS THE HOT PART OF THE FURNACE.
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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) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |