US3579390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a cermet
Assignee: National Aeronautics and Space Administration
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Filing: 1968-12-20
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Granted: 1971-05-18
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Expires: 1988-12-20
Abstract
Abstract A CERMET IN WHICH CERAMIC PARTICLES DISPERSED IN A METAL MATRIX ARE UNCOUPLED THEREFROM. THE CERMET IS MADE BY PRESSING METAL COATED CERAMIC PARTICLES IN A DIE AT A TEMPERATURE SUFFICIENT TO CAUSE BONDING OF THE METAL COATINGS TO ONE ANOTHER. THE CERMET IS THEN HEAT TREATED TO MECHANICALLY UNCOUPLE THE CERAMIC PARTICLES FROM THE METAL MATRIX WHEREBY EXPANSION OF THE CERMET WHEN HEATED IS SUBSTANTIALLY THE SAME AS THAT OF THE METAL MATRIX.
Inventors
- 👤 Mickey O Marlow
- 👤 Alexis I Kaznoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:51
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/10; C22C1/1084; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021; Y10T428/12028; Y10T428/12063; Y10T428/12146
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |