US3224844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zone-melting method for metal compounds
Assignee: US Philips Corp
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Filing: 1962-02-28
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Granted: 1965-12-21
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Expires: 1982-02-28
Abstract
No abstract record available.
Inventors
- 👤 Gerthsen Peter Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:26
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/16; C30B13/22; C30B13/08; Y; Y10; Y10S; Y10S117/00; Y10S117/905; Y10S117/906; Y10S117/918; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1076; Y10T117/1088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A METHOD OF ZONE-MELTING A BODY OF A METAL COMPOUND HAVING POOR ELECTRICAL CONDUCTIVITY, SAID COMPOUND HAVING A METAL ELEMENT WHICH IS ELECTRICALLY CONDUCTIVE, COMPRISING PROVIDING A GENERALLY ROD-SHAPED BODY OF SAID METAL COMPOUND, PROVIDING AT LEAST TWO SOLID ELECTRODES EACH CONSTIUTUED OF AT LEAST ONE ELECTRICALLY CONDUCTIVE METAL ADJACENT THE SAID BODY, THE METAL IN THE ELECTRODES BEING THE SAME AS THE ELECTRICALLY CONDUCTIVE METAL ELEMENT OF THE SAID COMPOUND IN UNREACTED FORM, ESTABLISHING AN ARC DISCHARGE BETWEEN EACH OF THE SAID ELECTRODES AND A PORTION OF THE BODY TO MELT A TRANSVERSE ZONE OF THE BODY IN AN ATMOSPHERE CONTAINING THE OTHER COMPONENT OF THE METAL COMPOUND, AND CAUSING RELATIVE MOVEMENT OF THE ELECTRODES AND THE ROD-SHAPED BODY TO PASS THE MOLTEN ZONE MAINTAINED BY THE ARC DISCHARGE LONGITUDINALLY THROUGH SAID BODY.
Claim 2
Independent Claim
134 words
A METHOD OF ZONE-MELTING A BODY OF A METAL COMPOUND HAVING POOR ELECTRICAL CONDUCTIVITY, SAID COMPOUND HAVING A METAL ELEMENT WHICH IS ELECTRICALLY CONDUCTIVE, COMPRISING PROVIDING A GENERALLY ROD-SHAPED BODY OF SAID METAL COMPOUND, PROVIDING AT LEAST TWO SOLID ELECTRODES EACH CONSTIUTUED OF AT LEAST ONE ELECTRICALLY CONDUCTIVE METAL ADJACENT THE SAID BODY, THE METAL IN THE ELECTRODES BEING THE SAME AS THE ELECTRICALLY CONDUCTIVE METAL ELEMENT OF THE SAID COMPOUND IN UNREACTED FORM, ESTABLISHING AN ARC DISCHARGE BETWEEN EACH OF THE SAID ELECTRODES AND A PORTION OF THE BODY TO MELT A TRANSVERSE ZONE OF THE BODY IN AN ATMOSPHERE CONTAINING THE OTHER COMPONENT OF THE METAL COMPOUND, AND CAUSING RELATIVE MOVEMENT OF THE ELECTRODES AND THE ROD-SHAPED BODY TO PASS THE MOLTEN ZONE MAINTAINED BY THE ARC DISCHARGE LONGITUDINALLY THROUGH SAID BODY.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |