Patent US2682445A successfully refreshed from Google Patents.
US2682445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of purified anhydrous zirconium tetrahalide
Assignee: Saeurefabrik Schweizerhall
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Filing: 1952-07-08
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Granted: 1954-06-29
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Expires: 1972-07-08
Abstract
No abstract record available.
Inventors
- 👤 Frey Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:32
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR THE PRODUCTION OF PURIFIED ZIRCONIUM TETRAHALIDE FROM AN IMPURE ANHYDROUS ZIRCONIUM TETRAHALIDE CONTAINING HALIDE IMPURITIES INCLUDING FERRIC HALIDE, SIAD IMPURE ZIRCONIUM TETRAHALIDE BEING NORMALLY SOLID AND SUBLIMABLE FROM SOLID STATE, WHICH COMPRISES HEATING SAID IMPURE ZIRCONIUM TETRAHALIDE IN INTIMATE ADMIXTURE WITH AN ORGANIC SUBSTANCE THAT CARBONIZES IN ITS POINT, TO A TEMPERATURE BELOW ITS SUBLIMATION POINT, TO A TEMPERATURE AT WHICH THE ZIRCONIUM TETRAHALIDE VAPORIZES, THEREBY CARBONIZING SAID SUBSTANCE, BINDING HALIDE IMPURITIES WITH THE CARBONIZED SUBSTANCE, AND VAPORIZING PURIFIED ZIRCONIUM TETRAHALIDE FROM THE MASS.
Claim 2
Dependent Claim
87 words
A PROCESS FOR THE PRODUCTION OF PURIFIED ZIRCONIUM TETRAHALIDE FROM AN IMPURE ANHYDROUS ZIRCONIUM TETRAHALIDE CONTAINING HALIDE IMPURITIES INCLUDING FERRIC HALIDE, SIAD IMPURE ZIRCONIUM TETRAHALIDE BEING NORMALLY SOLID AND SUBLIMABLE FROM SOLID STATE, WHICH COMPRISES HEATING SAID IMPURE ZIRCONIUM TETRAHALIDE IN INTIMATE ADMIXTURE WITH AN ORGANIC SUBSTANCE THAT CARBONIZES IN ITS POINT, TO A TEMPERATURE BELOW ITS SUBLIMATION POINT, TO A TEMPERATURE AT WHICH THE ZIRCONIUM TETRAHALIDE VAPORIZES, THEREBY CARBONIZING SAID SUBSTANCE, BINDING HALIDE IMPURITIES WITH THE CARBONIZED SUBSTANCE, AND VAPORIZING PURIFIED ZIRCONIUM TETRAHALIDE FROM THE MASS.
References Cited (Backward Citations)
US2592021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-28 | 1957-12-28 | 1958-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-28 | 1961-12-28 | 1962-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-28 | 1965-12-28 | 1966-06-29 | $7700.00 | Window Closed / Lapsed |