US2931705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing zirconium chlorides
Assignee: Columbia Southern Chemical Corp
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Filing: 1957-09-18
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Granted: 1960-04-05
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Expires: 1977-09-18
Abstract
No abstract record available.
Inventors
- 👤 Peter R Girardot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:52
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE METHOD OF CHLORINATING A ZIRCONIUM OXIDE-SILICON OXIDE MATERIAL TO EVOLVE ZIRCONIUM TETRACHLORIDE WHICH COMPRISES PASSING ELEMENTAL CHLORINE INTO A MIXTURE OF SIAD MATERIAL AND CARBON, INCLUDING IN SAID MIXTURE AT LEAST 0.1 PERXENT OF BORON OXIDE BY WEIGHT OF THE WEIGHT AND CONDUCTING SUCH CHLORINATION AT A TEMPERATURE SUBSTANTIALLY BELOW THAT REQUIRED TO EVOLVE A ZIRCONIUM TETRACHLORIDE IN THE ABSENCE OF A BORON COMPOUND AND OBTAIN EQUIVALENT CHLORINE UTILIZATION.
Claim 2
Independent Claim
70 words
THE METHOD OF CHLORINATING A ZIRCONIUM OXIDE-SILICON OXIDE MATERIAL TO EVOLVE ZIRCONIUM TETRACHLORIDE WHICH COMPRISES PASSING ELEMENTAL CHLORINE INTO A MIXTURE OF SIAD MATERIAL AND CARBON, INCLUDING IN SAID MIXTURE AT LEAST 0.1 PERXENT OF BORON OXIDE BY WEIGHT OF THE WEIGHT AND CONDUCTING SUCH CHLORINATION AT A TEMPERATURE SUBSTANTIALLY BELOW THAT REQUIRED TO EVOLVE A ZIRCONIUM TETRACHLORIDE IN THE ABSENCE OF A BORON COMPOUND AND OBTAIN EQUIVALENT CHLORINE UTILIZATION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |