Patent US3738828A successfully refreshed from Google Patents.
US3738828A
Expired / Lapsed
US
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Method of powder activation
Assignee: Individual
•
Filing: 1970-07-31
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Granted: 1973-06-12
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Expires: 1990-07-31
Abstract
Abstract A METHOD FOR ACTIVATION OF METALLIC POWDERS BY SUBJECTING THE POWDER TO BOMBARDMENT WITH ELECTRONS, IONS, OR MOLECULES IN AN INERT OR REDUCTIVE ATMOSPHERE. IMPROVED DENSITIES RESULT IN SINTERING, AS DO IMPROVED CATALYTIC ACTIONS. SIMULTANEOUS PULVERIZATION OF COARSE PARTICLES OR BODIES IS ALSO ACHIEVED WHERE DESIRED. THE PRETREATMENT IS, IN SOME INSTANCES, COMBINED WITH LOADING THE ACTIVATED PARTICLES DIRECTLY INTO A MOLD, FOR COMPACTION OR SINTERING, PREFERABLY WITH SOME ADDITIONAL ACTIVATION, ALL DONE IN AN INTEGRATED SYSTEM.
Inventors
- 👤 K Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:41
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9041; B; B22; B22F; B22F1/00; B22F1/14; B22F1/17; H01M4/88; H01M4/9016; B22F2998/00; B22F2999/00; H01M2004/8678; H01M2004/8684; H01M2004/8689; H01M2300/00; H01M2300/0002; H01M2300/0014; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |