US3702279A
Expired / Lapsed
US
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Fibrous thermal insulation and method for preparing same
Assignee: United States Atomic Energy Commission
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Filing: 1971-04-07
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Granted: 1972-11-07
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Expires: 1991-04-07
Abstract
Abstract A LOW-DENSITY THERMAL INSULATION USABLE AT HIGH TEMPERATURES IN OXIDIZING ATMOSPHERES IS PREPARED BY PULP MOLDING A SLURRY OF INORGANIC FIBERS, IMPREGNATING THE MOLDED FIBROUS MASS WITH A BINDER OF AN INORGANIC SOL, GELATINIZING THE SOL, CURING THE GELATINIZED BINDER, DRYING THE COMPOSITE, AND THEREAFTER FIRING THE COMPOSITE FOR SINTERING THE BINDER.
Inventors
- 👤 Zane L Ardary
- 👤 David H Sturgis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:15
CPC Classifications
F; F16; F16L; F16L59/00; C; C04; C04B; C04B30/00; C04B30/02; Y; Y10; Y10S; Y10S264/00; Y10S264/19; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T428/29; Y10T428/2904; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2949; Y10T428/2964; Y10T428/298
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |