US3671220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of powdered metals
Assignee: Rederi Nordstjernan AB
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Filing: 1970-05-11
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Granted: 1972-06-20
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Expires: 1990-05-11
Abstract
Abstract AN APPARATUS AND PROCESS ARE PROVIDED FOR REDUCING METAL HALIDES TO METAL POWDER LOW IN HALIDE CONTENT, THE PROCESS COMPRISING PROVIDING A PREHEATED SUBSTANTIALLY UNIFORM MIXTURE OF REACTANTS COMPRISING A METAL HALIDE UNIFORMLY DISPERSED THROUGH HYDROGEN AT A TEMPERATURE ABOVE THE REACTION TEMPERATURE FOR SAID REACTANTS, AND THEN IMMEDIATELY FEEDING THE PREHEATED MIXTURE INTO A REACTION CHAMBER, WHEREBY THE REACTION TO METAL POWDER IS SUBSTANTIALLY SPONTANEOUSLY EFFECTED.
Inventors
- 👤 Kurt Alfred Jonsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:52
CPC Classifications
C; C22; C22B; C22B5/00; C22B5/02; C22B5/16; B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/28; C22C; C22C1/00; C22C1/02
Claims Analysis
Total Claims: 0
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |