US2962346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing alkali metal zirconate from zircon
Assignee: Columbia Southern Chemical Corp
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Filing: 1957-06-18
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Granted: 1960-11-29
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Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Charles J Sindlinger
- 👤 Jr Carl C Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:31
CPC Classifications
C; C01; C01G; C01G25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN THE METHOD OF REACTING ZIRCON WITH ALKALI METAL HYDROXIDE WHEREBY TO PRODUCE AN ALKALI METAL ZIRCONATE, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE REACTION OF ALKALI METAL HYDROXIDE WITH ZIRCON IN A REACTION MIXTURE THEREOF CONTAINING AT LEAST ABOUT 0.3 PART BY WEIGHT OF PERFORMED ALKALI METAL ZIRCONATE PER PART BY WEIGHT OF ZIRCON AT A TEMPERATURE HIGH ENOUGH TO CAUSE THE ALKALI METAL HYDROXIDE TO REACT WITH ZIRCON BUT BELOW THAT AT WHICH THE MIXTURE BECOMES LIQUID.
Claim 2
Dependent Claim
78 words
IN THE METHOD OF REACTING ZIRCON WITH ALKALI METAL HYDROXIDE WHEREBY TO PRODUCE AN ALKALI METAL ZIRCONATE, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE REACTION OF ALKALI METAL HYDROXIDE WITH ZIRCON IN A REACTION MIXTURE THEREOF CONTAINING AT LEAST ABOUT 0.3 PART BY WEIGHT OF PERFORMED ALKALI METAL ZIRCONATE PER PART BY WEIGHT OF ZIRCON AT A TEMPERATURE HIGH ENOUGH TO CAUSE THE ALKALI METAL HYDROXIDE TO REACT WITH ZIRCON BUT BELOW THAT AT WHICH THE MIXTURE BECOMES LIQUID.
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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |