Patent US2797160A successfully refreshed from Google Patents.
US2797160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of zirconium
Assignee: Individual
•
Filing: 1951-09-07
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Granted: 1957-06-25
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Expires: 1971-09-07
Abstract
No abstract record available.
Inventors
- 👤 Frank H Spedding
- 👤 Harley A Wihelm
- 👤 Wayne H Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:47
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR PRODUCING MASSIVE ZIRCONIUM METAL, COMPRISING MIXING ZIRCONIUM TETRAFLUORIDE, ZINC, A REDUCING METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, AND A BOOSTER SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF IODINE AND SULFUR, SAID REDUCING METAL BEING USED IN A QUANTITY EXCESSIVE OF THAT STOICHIOMETRICALLY REQUIRED AND THE MOLAL RATIO OF BOOSTER TO ZIRCONIUM TETRAFLUORIDE BEING 0.105 IN THE CASE OF IODINE AND FROM 0.208 TO 0.425 IN THE CASE OF SULFUR; HEATING THE MIXTURE THUS OBTAINED IN A CLOSED SYSTEM TO AT LEAST 450*C. WHEREBY A REGULUS OF METALLIC ZIRCONIUM AND A LAYER FORM; COOLING THE REACTION PRODUCTS TO ABOUT ROOM TEMPERATURE; AND SEPARATING THE ZIRCONIUM FROM THE SLAG.
Claim 2
Dependent Claim
117 words
A PROCESS FOR PRODUCING MASSIVE ZIRCONIUM METAL, COMPRISING MIXING ZIRCONIUM TETRAFLUORIDE, ZINC, A REDUCING METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, AND A BOOSTER SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF IODINE AND SULFUR, SAID REDUCING METAL BEING USED IN A QUANTITY EXCESSIVE OF THAT STOICHIOMETRICALLY REQUIRED AND THE MOLAL RATIO OF BOOSTER TO ZIRCONIUM TETRAFLUORIDE BEING 0.105 IN THE CASE OF IODINE AND FROM 0.208 TO 0.425 IN THE CASE OF SULFUR; HEATING THE MIXTURE THUS OBTAINED IN A CLOSED SYSTEM TO AT LEAST 450*C. WHEREBY A REGULUS OF METALLIC ZIRCONIUM AND A LAYER FORM; COOLING THE REACTION PRODUCTS TO ABOUT ROOM TEMPERATURE; AND SEPARATING THE ZIRCONIUM FROM THE SLAG.
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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |