US3712809A
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Method of making cermets of high static and dynamical strength
Assignee: Gesellschaft fuer Kernforschung mbH
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Filing: 1969-03-20
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Granted: 1973-01-23
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Expires: 1989-03-20
Abstract
Abstract A METHOD OF FABRICATING CERMETS OF HIGH STATIC AND DYNAMIC STRENGTH, INCLUDING THE STEPS OF VIBRATING METALCOATED CERAMIC PARTICLES HAVING A PARTICLE SIZE RANGE BETWEEN 20 AND 500 UM. IN METALLIC CAPSULES, WELDING THE CAPSULES AIRTIGHT, AND COMPACTING THE PARTICLES TO ULTIIMATE DENSITY BY ISOSTATIC PRESSING AT PRESSURES BETWEEN 100 AND 1000 KG./CM.2 AND TEMPERATURES BETWEEN 1000 AND 1700* C., THE CAPSULES HAVING STILL SUFFICIENT PLASTICITY UNDER THE CONDITIONS OF THE COMPACTING.
Inventors
- 👤 H Bumm
- 👤 F Thuemmler
- 👤 P Weimar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:53
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/12; B22F3/14; B22F3/15; C; C22; C22C; C22C29/00; C22C29/12; G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/64; Y; Y02; Y02E; Y02E30/00; Y02E30/30
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |