US3736160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous zirconia cement composites
Assignee: Union Carbide Corp
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Filing: 1970-05-11
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Granted: 1973-05-29
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Expires: 1990-05-11
Abstract
Abstract COMPOSITES COMPRISING FIBROUS ZIRCONIA IN A MATRIX OF ZIRCONIA ARE PREPARED BY SUBJECTING FIBROUS ZIRCONIA IMPREGNATED WITH A MIZTURE OF A LIQUID CONTAINING A ZIRCONIUM COMPOUND AND A REFRACTORY POWDER TO A TEMPERATURE SUFFICIENT TO INSURE CONVERSION OF SUBSTANTIALLY ALL OF THE ZIRCONIUM COMPOUND TO ZIRCONIA. THE COMPOSITES ARE USEFUL AS HEAT SHIELDS, IINSULATION AND THE LIKE.
Inventors
- 👤 B Hamling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:20
CPC Classifications
C; C23; C23C; C23C30/00; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/48; C04B35/50; C04B35/71; C04B35/78; C04B35/80; C23C24/00; C23C26/00; C23C26/02; C23C28/00
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |