US2663630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metal powders
Assignee: BASF SE
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Filing: 1950-10-21
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Granted: 1953-12-22
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Expires: 1970-10-21
Abstract
No abstract record available.
Inventors
- 👤 Schlecht Leo
- 👤 Oestreicher Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:55
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/30; B22F9/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A PROCESS OF PRODUCING METAL POWDERS BY THERMAL DECOMPOSITION OF METAL CARBONYLS IN THE HOT FREE SPACE OF AN ELONGATED VERTICAL CYLINDRICAL CONTAINER THE STEP WHICH COMPRISES SEPARATING A FRACTION OF POWDER CHARACTERIZED BY LOW CARBON CONTENT BY LEADING A CURRENT OF GAS THROUGH THE SAID CONTAINER WHILE INTRODUCING THE GAS AXIALLY AT THE BOTTOM AND IMPARTING TO THE GAS CURRENT AN OBLIQUELY DOWNWARD DIRECTION, SO AS TO ENTRAIN A PORTION OF THE METAL POWER FORMED IN SAID CONTAINER TO A SOLIDS CURRENT OF GAS OUT OF SAID CONTAINER TO A SOLIDS SEPARATOR, AND SEPARATING FROM THE GAS THE METAL POWDER ENTRAINED BY THE CURRENT.
Claim 2
Dependent Claim
106 words
IN A PROCESS OF PRODUCING METAL POWDERS BY THERMAL DECOMPOSITION OF METAL CARBONYLS IN THE HOT FREE SPACE OF AN ELONGATED VERTICAL CYLINDRICAL CONTAINER THE STEP WHICH COMPRISES SEPARATING A FRACTION OF POWDER CHARACTERIZED BY LOW CARBON CONTENT BY LEADING A CURRENT OF GAS THROUGH THE SAID CONTAINER WHILE INTRODUCING THE GAS AXIALLY AT THE BOTTOM AND IMPARTING TO THE GAS CURRENT AN OBLIQUELY DOWNWARD DIRECTION, SO AS TO ENTRAIN A PORTION OF THE METAL POWER FORMED IN SAID CONTAINER TO A SOLIDS CURRENT OF GAS OUT OF SAID CONTAINER TO A SOLIDS SEPARATOR, AND SEPARATING FROM THE GAS THE METAL POWDER ENTRAINED BY THE CURRENT.
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) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |