US2915384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing zirconium
Assignee: National Research Corp
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Filing: 1956-10-02
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Granted: 1959-12-01
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Expires: 1976-10-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur G Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:18
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/14; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A PROCESS FOR PRODUCING ZIRCONIUM BY REDUCTION OF ZIRCONIUM TETRACHLORIDE WHEREIN AN ATMOSPHERE CONTAINING A PARTIAL PRESSURE OF A ZIRCONIUM TETRACHLORIDE IS PROVIDED IN A REACTION ZONE IN A REACTION CHAMBER, AND IS REDUCED TO ZIRCONIUM METAL BY REACTION WITH LIQUID METAL REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS AND THE ALKALINE EARTHS METALS, THE IMPROVEMENT WHICH COMPRISES HOLDING A SUPPLY OF LIQUID METAL REDUCING AGENT AT A TEMPERATURE BELOW THE IGNITION TEMPERATURE FOR THE RACTION BETWEEN THE REDUCING AGENT AND THEZIRCONIUM TETRACHLORIDE, PROVIDING A METALLIC SUR-
Claim 2
Dependent Claim
92 words
IN A PROCESS FOR PRODUCING ZIRCONIUM BY REDUCTION OF ZIRCONIUM TETRACHLORIDE WHEREIN AN ATMOSPHERE CONTAINING A PARTIAL PRESSURE OF A ZIRCONIUM TETRACHLORIDE IS PROVIDED IN A REACTION ZONE IN A REACTION CHAMBER, AND IS REDUCED TO ZIRCONIUM METAL BY REACTION WITH LIQUID METAL REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS AND THE ALKALINE EARTHS METALS, THE IMPROVEMENT WHICH COMPRISES HOLDING A SUPPLY OF LIQUID METAL REDUCING AGENT AT A TEMPERATURE BELOW THE IGNITION TEMPERATURE FOR THE RACTION BETWEEN THE REDUCING AGENT AND THEZIRCONIUM TETRACHLORIDE, PROVIDING A METALLIC SUR-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |