US3764272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing fine powder by plasma sublimation
Assignee: TDK Micronas GmbH
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Filing: 1971-03-17
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Granted: 1973-10-09
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Expires: 1991-03-17
Abstract
Abstract A FINE POWDER IS PRODUCED BY VAPORIZING A MATERIAL CONTAINING THE CONSTITUENT ELEMENTS THEREOF IN A PLASMA ENERGIZED AT A MEDIUM OR RADIO FREQUENCY, SAID MATERIAL BEING CONTAINED WITHIN A ROTATING CLUSTER OF INTERNALLY FLUID COOLED SPACED TUBES OF METAL OF HIGH ELECTRICAL AND THERMAL CONDUCTIVITY, AND CONDENSING THE VAPORIZED MATERIAL.
Inventors
- 👤 H Sterling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:31
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/18; C01B33/181; C01B33/182; B; B01; B01J; B01J12/00; B01J12/002; B01J12/007; B01J19/00; B01J19/08; B01J19/087; B01J19/088; C01B13/00; C01B13/14; C01B13/145; B01J2208/00; B01J2208/00008; B01J2208/00716; C01P; C01P2004/00; C01P2004/60; C01P2004/62; Y; Y10; Y10S; Y10S422/00; Y10S422/906
Claims Analysis
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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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |