US2783126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovering zirconium oxide
Assignee: Primerica Inc
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Filing: 1954-10-04
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Granted: 1957-02-26
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Expires: 1974-10-04
Abstract
No abstract record available.
Inventors
- 👤 Hartmut W Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:43
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD OF RECOVERING ZIRCONIUM OXIDE FROM A ZIRCONIUM SALT SOLUTION WHICH COMSISTS IN PREPARING A COMPLEX SOLUTION OF AN ACIDIC ZIRCONIUM SALT BY DISSOLVING IN AN ALKALI METAL CARBONATE SOLUTION A MATERIAL SELECTED FROM THE CLASS CONSISTING OF SAID ACIDIC SALT AND SOLUTIONS THEREOF, AND HEATING THE RESULTING SOLUTION TO A TEMPERATURE OF AT LEAST 150*C. IN A CLOSED VESSEL.
Claim 2
Independent Claim
61 words
THE METHOD OF RECOVERING ZIRCONIUM OXIDE FROM A ZIRCONIUM SALT SOLUTION WHICH COMSISTS IN PREPARING A COMPLEX SOLUTION OF AN ACIDIC ZIRCONIUM SALT BY DISSOLVING IN AN ALKALI METAL CARBONATE SOLUTION A MATERIAL SELECTED FROM THE CLASS CONSISTING OF SAID ACIDIC SALT AND SOLUTIONS THEREOF, AND HEATING THE RESULTING SOLUTION TO A TEMPERATURE OF AT LEAST 150*C. IN A CLOSED VESSEL.
References Cited (Backward Citations)
US1454564A
Cited
GB329041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |