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Patent US3758662A successfully refreshed from Google Patents.
US3758662A
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In carbonaceous mold forming dense carbide articles from molten refractory metal contained
Assignee: Westinghouse Electric Corp
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Filing: 1971-04-30
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Granted: 1973-09-11
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Expires: 1991-04-30
Abstract
Abstract A fully dense, homogeneous, single phased refractory monocarbide is prepared by heating a body of a refractory metal such as Ti, Zr, Hf, V, Nb Ta, and alloys of two or more of these metals in a mold of carbonaceous material heating the metal and mold in an inert atmosphere to a temperature above the melting point of the metal but not exceeding the metal carbide-carbon eutectic temperature of the charge for a period of time to cause formation of a full metal carbide body, and cooling to room temperature.
Inventors
- 👤 J Tobin
- 👤 L Adelsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:05
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/5607; C01; C01B; C01B32/00; C01B32/90; C04B35/5611; C04B35/5622; C04B35/622; C04B35/64; C04B35/645; C01P; C01P2004/00; C01P2004/01; C01P2004/03; C01P2006/00; C01P2006/10; C01P2006/80
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
36 words
The method of claim 1 in which the metallic charge is liquid metal that is poured into the mold, and in which the charge and mold are held at a temperature above the metal melting point.
Claim 2
Dependent Claim
14 words
The method of claim 1 in which the metallic charge is a solid form.
Claim 3
Dependent Claim
17 words
The method of claim 3 in which the metallic charge is an assembly of loose metal particles.
Claim 4
Dependent Claim
22 words
The method of claim 3 in which the metallic charge is a preformed compact conforming to the shape of the mold cavity.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |