US3119685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for melting metals
Assignee: Millennium Petrochemicals Inc
•
Filing: 1959-12-17
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Granted: 1964-01-28
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Expires: 1979-12-17
Abstract
No abstract record available.
Inventors
- 👤 Virgil L Hansley
- 👤 Schott Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:50
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/02; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A METHOD FOR THE PURIFICATION OF A REFRACTORY METAL BAR CONTAINING VAPORIZABLE SOLID IMPURITIES COMPRISING THE FOLLOWING STEPS: MOVING SAID BAR INTO AN ELECTRICALLY HIGH FREQUENCY INDUCTION HATED TREATING ZONE MAINTAINED IN AN INERT ATMOSPHERE BY A STREAM OF PURGING INERT GAS AT A TEMPERATURE SUFFICIENT TO INCIPIENTLY FUSE SAID BAR WITHOUT COMPLETELY MELTING THE METAL TO VAPORIZE THE IMPUITIES IN SAID BAR AND TO FORM PARTIALLY MOLTEN, NON-SPHERICAL, INRREGULAR PARTICLES OF SAID METAL, REMOVING THE VAPORIZED IMPURITIES IN THE STREAM OF PURGING GAS, ALLOWING HTE IRREGULAR PARTICLES OF SAID METAL TO FALL FROM SAID BAR INTO CONTACT WITH AN ELEMENT HAVING A SOLID SURFACE MAINTAINED AT A TEMPERATURE BELOW THE MELTING POINT OF THE METAL AND SUFFICIENT TO CAUSE AT LEAST SUBSTANTIAL SOLIDIFICATION OF THE IRREGULAR PARTICLES OF SAID METAL, DISCHARGING THE RESULTING SOLIDIFIED IRREGULAR PARTICLES OF SAID METAL TO A COLLECTING ZONE AND RECOVERING THEM, AND THEN COMPACTING THE RECOVERED IRREGULAR METAL PARTICLES UNDER PRESSURE TO FORM A PURIFIED METAL BAR.
Claim 2
Independent Claim
163 words
A METHOD FOR THE PURIFICATION OF A REFRACTORY METAL BAR CONTAINING VAPORIZABLE SOLID IMPURITIES COMPRISING THE FOLLOWING STEPS: MOVING SAID BAR INTO AN ELECTRICALLY HIGH FREQUENCY INDUCTION HATED TREATING ZONE MAINTAINED IN AN INERT ATMOSPHERE BY A STREAM OF PURGING INERT GAS AT A TEMPERATURE SUFFICIENT TO INCIPIENTLY FUSE SAID BAR WITHOUT COMPLETELY MELTING THE METAL TO VAPORIZE THE IMPUITIES IN SAID BAR AND TO FORM PARTIALLY MOLTEN, NON-SPHERICAL, INRREGULAR PARTICLES OF SAID METAL, REMOVING THE VAPORIZED IMPURITIES IN THE STREAM OF PURGING GAS, ALLOWING HTE IRREGULAR PARTICLES OF SAID METAL TO FALL FROM SAID BAR INTO CONTACT WITH AN ELEMENT HAVING A SOLID SURFACE MAINTAINED AT A TEMPERATURE BELOW THE MELTING POINT OF THE METAL AND SUFFICIENT TO CAUSE AT LEAST SUBSTANTIAL SOLIDIFICATION OF THE IRREGULAR PARTICLES OF SAID METAL, DISCHARGING THE RESULTING SOLIDIFIED IRREGULAR PARTICLES OF SAID METAL TO A COLLECTING ZONE AND RECOVERING THEM, AND THEN COMPACTING THE RECOVERED IRREGULAR METAL PARTICLES UNDER PRESSURE TO FORM A PURIFIED METAL BAR.
References Cited (Backward Citations)
US2465545A
Cited
US2582120A
Cited
US2517557A
Cited
US2465893A
Cited
US2620269A
Cited
US2840465A
Cited
US2876094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |