US3033647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of extracting alkali metals from ores by hydrothermal treating at about the critical temperature
Assignee: Individual
•
Filing: 1954-12-29
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Granted: 1962-05-08
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Expires: 1974-12-29
Abstract
No abstract record available.
Inventors
- 👤 Yamazaki Jumei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:09
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/10; C22B26/12; C01; C01D; C01D1/00; C01D1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN THE METHOD OF RECOVERING ALKALI METAL VALUES FROM THEIR ORES, THE IMPROVEMENT COMPRISING EXERTING PRESSURE ABOVE THE SATURATION VAPOR PRESSURE ON A SLURRY OF THE ORE MATTER MADE BY MIXING ORES CONTAINING ALKALI ELEMENTS SELECTED FROM THE GROUP CONSISTING OF SPODUMENE, LITHIA MICA, AMBLYGONITE, PETALITE, FELDSPAR AND LAPARITE, WITH WATER AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AN ALKALINE EARTH OXIDE AND AN ALKALINE EARTH
Claim 2
Dependent Claim
68 words
IN THE METHOD OF RECOVERING ALKALI METAL VALUES FROM THEIR ORES, THE IMPROVEMENT COMPRISING EXERTING PRESSURE ABOVE THE SATURATION VAPOR PRESSURE ON A SLURRY OF THE ORE MATTER MADE BY MIXING ORES CONTAINING ALKALI ELEMENTS SELECTED FROM THE GROUP CONSISTING OF SPODUMENE, LITHIA MICA, AMBLYGONITE, PETALITE, FELDSPAR AND LAPARITE, WITH WATER AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AN ALKALINE EARTH OXIDE AND AN ALKALINE EARTH
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |