Patent US2744629A successfully refreshed from Google Patents.
US2744629A
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Method and apparatus for processing chemicals
Assignee: RCA Corp
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Filing: 1952-06-02
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Granted: 1956-05-08
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Expires: 1972-06-02
Abstract
No abstract record available.
Inventors
- 👤 Benjamin H Vine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:52
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/04; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/246; H; H01; H01J; H01J9/00; H01J9/02; H01J9/12; H01J9/20; H01J9/233; Y; Y10; Y10S; Y10S159/00; Y10S159/01; Y10S159/06; Y10S159/15; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD OF PREPARING UNCONTAMINATED CHEMICAL MATERIAL IN APPARATUS HAVING A CONTAINER PROVIDED WITH A RESTRICTED ORIFICE, SAID METHOD COMPRISING SURROUNDING SAID CONTAINER WITH AN ATMOSPHERE OF INERT GAS, REDUCING THE PRESSURE ABOVE SAID MINERAL TO ALLOW A FLOW OF SAID GAS THROUGH SAID ORIFICE AND INTO SAID CONTAINER, HEATING SAID MATERIAL TO A MOLTEN STATE TO ALLOW PASSAGE OF SAID GAS THROUGH SAID MATERIAL FOR REMOVING VOLATILE IMPURITIES THEREFROM, MAINTAINING SAID REDUCED PRESSURE ABOVE SAID MOLTEN MATERIAL TO RETAIN THE MATERIAL WITHIN SAID CONTAINER, AND THEREAFTER INCREASING THE PRESSURE ABOVE THE SURFACE OF SAID MATERIAL TO FORCE SAID MATERIAL THROUGH SAID ORIFICE AND INTO A HEATED CAPSULE IN THE PRESENCE OF SAID INERT ATMOSPHERE.
Claim 2
Independent Claim
115 words
THE METHOD OF PREPARING UNCONTAMINATED CHEMICAL MATERIAL IN APPARATUS HAVING A CONTAINER PROVIDED WITH A RESTRICTED ORIFICE, SAID METHOD COMPRISING SURROUNDING SAID CONTAINER WITH AN ATMOSPHERE OF INERT GAS, REDUCING THE PRESSURE ABOVE SAID MINERAL TO ALLOW A FLOW OF SAID GAS THROUGH SAID ORIFICE AND INTO SAID CONTAINER, HEATING SAID MATERIAL TO A MOLTEN STATE TO ALLOW PASSAGE OF SAID GAS THROUGH SAID MATERIAL FOR REMOVING VOLATILE IMPURITIES THEREFROM, MAINTAINING SAID REDUCED PRESSURE ABOVE SAID MOLTEN MATERIAL TO RETAIN THE MATERIAL WITHIN SAID CONTAINER, AND THEREAFTER INCREASING THE PRESSURE ABOVE THE SURFACE OF SAID MATERIAL TO FORCE SAID MATERIAL THROUGH SAID ORIFICE AND INTO A HEATED CAPSULE IN THE PRESENCE OF SAID INERT ATMOSPHERE.
References Cited (Backward Citations)
GB338409A
Cited
US1921060A
Cited
US2054923A
Cited
US2274643A
Cited
US2533149A
Cited
US2583438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |