US3574144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic component for magnetohydrodynamic generator electrode
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1969-01-24
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Granted: 1971-04-06
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Expires: 1989-01-24
Abstract
Abstract A CERAMIC COMPONENT WHICH IS INTENDED FOR USE IN THE FABRICATION OF MHD GENERATOR ELECTRODES AND HAS HIGH-TEMPERATURE STRENGTH AS WELL AS HIGH RESISTANCE TO THE CORROSIVE ACTION OF THE SEED IN THE FEED GAS. THE COMPONENT MAINLY CONTAINS AT LEAST ONE OF THE MAGNESIUM SPINELS MGO-CR2O3 AND MGO-AL2O3 TO WHICH IS ADDED AN ALKALINE-EARTH OXIDE CAO, BAO OR SRO IN A PROPORTION WITHIN THE RANGE OF 1 TO 10 MOLE PERCENT.
Inventors
- 👤 David Yerouchalmi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:23
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/08; H02K44/10; C; C04; C04B; C04B35/00; C04B35/01; C04B35/12; C04B35/42; C04B35/44; H01; H01B; H01B1/00; H01B1/06; H01B1/08
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |