US2695213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of zirconium tetrachloride from its complex compounds
Assignee: Individual
•
Filing: 1952-05-06
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Granted: 1954-11-23
•
Expires: 1972-05-06
Abstract
No abstract record available.
Inventors
- 👤 Willis C Fernelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:18
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF RECOVERING ZRCL4 FROM 2ZRCL4.PCL5 WHICH COMPRISES MIXING SAID 2ZRCL4.PCL5 WITH A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND PHOSPHORUS, SAID REDUCING AGENT BEING PRESENT IN SAID REACTION MIXTURE IN AN AMOUNT NOT SUBSTANTIALLY GREATER THAN THAT REQUIRED TO CONVERT THE PCL5 OF SAID 2ZRCL4.PCL5 TO PCL3, HEATING THE REACTION MIXTURE TO 100*-225* C. TO VAPORIZE PCL3 THEREFROM, THEREAFTER HEATING THE REACTION MIXTURE TO 275*-350* C. TO VAPORIZE ZRCL4 THEREFROM, AND CONDENSING THE VAPORIZED ZRCL4.
Claim 2
Independent Claim
80 words
THE METHOD OF RECOVERING ZRCL4 FROM 2ZRCL4.PCL5 WHICH COMPRISES MIXING SAID 2ZRCL4.PCL5 WITH A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND PHOSPHORUS, SAID REDUCING AGENT BEING PRESENT IN SAID REACTION MIXTURE IN AN AMOUNT NOT SUBSTANTIALLY GREATER THAN THAT REQUIRED TO CONVERT THE PCL5 OF SAID 2ZRCL4.PCL5 TO PCL3, HEATING THE REACTION MIXTURE TO 100*-225* C. TO VAPORIZE PCL3 THEREFROM, THEREAFTER HEATING THE REACTION MIXTURE TO 275*-350* C. TO VAPORIZE ZRCL4 THEREFROM, AND CONDENSING THE VAPORIZED ZRCL4.
References Cited (Backward Citations)
GB221802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |