US3147330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for furnacing conductive materials
Assignee: Union Carbide Corp
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Filing: 1962-09-24
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Granted: 1964-09-01
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Robert M Gage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:25
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; C; C22; C22B; C22B4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A PROCESS FOR MELTING CONDUCTIVE CHARGE MATERIALS IN A REFRACTORY HEARTH ENCLOSED IN A FURNACE WHEREIN A FIRST ELECTRODE CONTACTS THE CONDUCTIVE CHARGE MATERIAL THE IMPROVEMENT COMPRISING ESTABLISHING AND MAINTAINING AT LEAST ONE DIRECTIONALLY STABLE TRANSFERRED ELECTRIC ARC COLUMN BETWEEN SAID CONDUCTIVE CHARGE MATERIAL AND A SECOND NON-CONSUMABLE ELECTRODE WITH THE CURRENT IN SAID ARC COLUMN FLOWING BETWEEN SAID FIRST AND SAID SECOND NON-CONSUMABLE ELECTRODE THROUGH SAID OCNDUCTIVE CHARGE MATERIAL AND CONTINUING SAID CONTACT UNTIL SAID CONDUCTIVE MATERIAL IS AT LEAST PARTIALLY FUSED.
Claim 2
Dependent Claim
84 words
IN A PROCESS FOR MELTING CONDUCTIVE CHARGE MATERIALS IN A REFRACTORY HEARTH ENCLOSED IN A FURNACE WHEREIN A FIRST ELECTRODE CONTACTS THE CONDUCTIVE CHARGE MATERIAL THE IMPROVEMENT COMPRISING ESTABLISHING AND MAINTAINING AT LEAST ONE DIRECTIONALLY STABLE TRANSFERRED ELECTRIC ARC COLUMN BETWEEN SAID CONDUCTIVE CHARGE MATERIAL AND A SECOND NON-CONSUMABLE ELECTRODE WITH THE CURRENT IN SAID ARC COLUMN FLOWING BETWEEN SAID FIRST AND SAID SECOND NON-CONSUMABLE ELECTRODE THROUGH SAID OCNDUCTIVE CHARGE MATERIAL AND CONTINUING SAID CONTACT UNTIL SAID CONDUCTIVE MATERIAL IS AT LEAST PARTIALLY FUSED.
References Cited (Backward Citations)
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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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |