US3577344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous thermal insulation and method of making same
Assignee: United States Atomic Energy Commission
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Filing: 1969-01-29
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Granted: 1971-05-04
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Expires: 1989-01-29
Abstract
Abstract LIGHWEIGHT, HIGH-TEMPERATURE, THERMAL INSULATING MATERIAL IS PREPARED BY MOLDING AN ADMIXTURE OR WATER SLURRY OF SMALL-DIAMETER FIBERS OF A REFRACTORY OR CARBONACEOUS MATERIAL AND A CARBONIZABLE BINDER CONSISTING OF STARCH PARTICULATES. THE MOLDED ADMIXTURE IS HEATED SUFFICIENTLY TO GELATINIZE THE STARCH, THEN DRIED, AND THEREAFTER HEATED SUFFICIENTLY IN AN INERT ATMOSPHERE TO PYROLYZE THE STARCH FOR EFFECTIVELY BONDING TOGETHER THE FIBERS. THE THERMAL INSULATING MATERIAL IS OF A DENSITY LESS THAN 10 LBS./FT.3 AND HAS A THERMAL CONDUCTIVITY OF LESS THAN ABOUT 1 B.T.U.-IN./ HR.-*F.-FT.2 AT A TEMPERATURE OF 1400*F.
Inventors
- 👤 Zane L Ardary
- 👤 Andrew W Maxey
- 👤 Carl D Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:07
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/71; C04B35/78; C04B35/80; C04B35/83; C04B38/00; C04B38/0022; F; F16; F16L; F16L59/00; C04B2201/00; C04B2201/30; C04B2201/32; Y; Y10; Y10S; Y10S264/00; Y10S264/19
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |