US3809565A
Expired / Lapsed
US
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Method of forming micron-size,metal-carbide particle dispersions in carbon
Assignee: United States Atomic Energy Commission
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Filing: 1973-04-23
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Granted: 1974-05-07
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Expires: 1993-04-23
Abstract
Abstract DISPERSIONS OF MICRO-SIZE, METAL-CARBIDE PARTICLES ARE ACHIEVED IN CARBON MATRICES BY DISSOLVING OR DISPERSING ORGANOMETALLIC COMPOUNDS IN CARBON PRECURSOR MATERIALS, E.G., THERMOSETTING RESINS AND COAL TAR PITCH, AND SUBJECTING THE MIXTURE OT A HIGH TEMPERATURE HEAT TREATMENT.
Inventors
- 👤 E Wewerka
- 👤 R Imprescia
- 👤 R Reiswig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:12
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/5607; C04B35/5622
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) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |