US3583931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxides of cubic crystal structure containing bismuth and at least one of ruthenium and iridium
Assignee: EIDP Inc
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Filing: 1969-11-26
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Granted: 1971-06-08
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Expires: 1989-11-26
Abstract
Abstract CERTAIN NOVEL ELECTRICALLY CONDUCTIVE BISMUTH RUTHENIUM AND BISMUTH IRIDIUM OXIDES, BI2(RU,IR)2O7, E.G., BI2RU2O7 AND BI2IR2O7, ARE PREPARED BY FIRING TOGETHER THE APPROPRIATE PRECURSORS, E.G., THE RESPECTIVE OXIDES. THE COMPOUNDS ARE USEFUL IN ELECTRICAL RESISTORS.
Inventors
- 👤 Robert J Bouchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:25
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06533; H01C17/0654; C; C04; C04B; C04B35/00; C04B35/01; H01B; H01B1/00; H01B1/06; H01B1/08
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |