US2996375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of recovering alkali metals
Assignee: Individual
•
Filing: 1958-06-11
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Granted: 1961-08-15
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Expires: 1978-06-11
Abstract
No abstract record available.
Inventors
- 👤 Wolkoff Jasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:06
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/10; G; G21; G21C; G21C19/00; G21C19/42; G21C19/44; G21C19/48; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS OF RECOVERING ALKALI METAL FROM VAPOR, COMPRISING CONTACTING SAID ALKALI METAL VAPOR WITH A SURFACE-ACTIVE ADSORBENT SELECTED FROM THE GROUP CONSISTING OF ACTIVATED ALUMINA, ACTIVATED CARBON, DEHYDRATED ZEOLITE, ACTIVATED MAGNESIA AND FULLER''S EARTH, SAID ADSORBENT HAVING BEEN PREHEATED TO A TEMPERATURE ABOVE THE VAPORIZATION POINT OF SAID ALKALI METAL WHEREBY SAID ALKALI METAL VAPOR IS ADSORBED BY SAID SURFACE-ACTIVE ADSORBENT, AND HEATING SAID SURFACE-ACTIVE ADSORBENT UNDER VACUUM WHEREBY SAID ALKALI METAL IS ISOLATED.
Claim 2
Dependent Claim
75 words
A PROCESS OF RECOVERING ALKALI METAL FROM VAPOR, COMPRISING CONTACTING SAID ALKALI METAL VAPOR WITH A SURFACE-ACTIVE ADSORBENT SELECTED FROM THE GROUP CONSISTING OF ACTIVATED ALUMINA, ACTIVATED CARBON, DEHYDRATED ZEOLITE, ACTIVATED MAGNESIA AND FULLER''S EARTH, SAID ADSORBENT HAVING BEEN PREHEATED TO A TEMPERATURE ABOVE THE VAPORIZATION POINT OF SAID ALKALI METAL WHEREBY SAID ALKALI METAL VAPOR IS ADSORBED BY SAID SURFACE-ACTIVE ADSORBENT, AND HEATING SAID SURFACE-ACTIVE ADSORBENT UNDER VACUUM WHEREBY SAID ALKALI METAL IS ISOLATED.
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) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |