US3565749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature resistant structures
Assignee: FMC Corp
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Filing: 1967-02-27
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Granted: 1971-02-23
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Expires: 1987-02-27
Abstract
Abstract ABLATIVE AND HIGH TEMPERATURE RESISTANT ARTICLES FORMED BY SHAPING INTO A DESIRED STRUCTURE A CELLULOSIC SOLUTION CONTAINING A METAL COMPOUND WHICH IS CONVERTED INTO A HYDRATE OF A GLASS- OR LATTICE-FORMING METAL OR INORGANIC OXIDE AND PROCESSING THE SHAPED STRUCTURE TO REMOVE THE SOLVENT, SOLIFITY THE CELLULOSIC MATERIAL AND POLYMERIZE THE INORGANIC OXIDE HYDRATE. APPLICATION OF HEAT TO THE STRUCTURE IN THE ABSENCE OF OXYGEN CONVERTS THE STRUCTURE TO AN INORGANIC OXIDE-CARBON PRODUCT AND SUBSEQUENTLY TO AN INORGANIC OR METAL CARBIDE. HEAT APPLIED TO THE STRUCTURE IN THE PRESENCE OF OXYGEN CONVERTS THE STRUCTURE TO AN ORGANIC OXIDE PRODUCT.
Inventors
- 👤 Irvin Wizon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:49
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/62227; C04B35/62231; Y; Y10; Y10S; Y10S264/00; Y10S264/19; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |