US3671385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous carbonaceous composites and method for manufacturing same
Assignee: United States Atomic Energy Commission
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Filing: 1970-07-17
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Granted: 1972-06-20
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Expires: 1990-07-17
Abstract
Abstract CARBONACEOUS COMPOSITES ARE PREPARED BY SPRAYING AN AQUEOUS SLURRY CONTAINING DISCRETE GRAPHITE FIBERS, A CARBONIZABLE RESIN IN PARTICULATE FORM, AND A WATER-SOLUBLE STARCH ONTO A POROUS MANDREL COUPLED TO A VACUUM SOURCE FOR DRAWING OFF EXCESS WATER FROM THE FORMED STRUCTURE. THIS STRUCTURE IS THEN HAEATED TO A TEMPERAURE SUFFICIENT TO CARBONIZE THE STARCH AND THE RESIN FOR PROVIDING BINDERS WHICH JOIN TOGETHER THE FIBERS.
Inventors
- 👤 Paul E Trent
- 👤 James E Miner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:50
CPC Classifications
D; D01; D01F; D01F11/00; D01F11/10; D01F11/14; C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; C08; C08L; C08L3/00; D01F11/12; D01F11/125
Claims Analysis
Total Claims: 0
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |