US4469658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered silicon carbide materials having metallized surface and process for producing the same
Assignee: Niterra Co Ltd
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Filing: 1981-12-22
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Granted: 1984-09-04
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Expires: 2001-12-22
Abstract
Abstract Sintered silicon carbide materials are described, which have a metallized surface consisting essentially of a composition comprising 10 to 90% by weight of Si, balance a mixture of at least two components selected from Fe, Ni and Co. A process for producing the silicon carbide sintered materials having the metallized surface is also described.
Inventors
- 👤 Yukihiro Kimura
- 👤 Shunkichi Nozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:47
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/51; C04B41/5144; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C23; C23C; C23C24/00; C23C24/08; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
62 words
A process for producing silicon carbide sintered materials having a metallized surface which comprises applying a paste of a powder comprising 10 to 90% by weight of Si, balance a mixture of at least two components selected from Fe, Ni and Co to a sintered silicon carbide material and sintering at a temperature of 1100° to 1800° C. in a non-oxidative atmosphere.
Claim 2
Dependent Claim
62 words
A process for producing silicon carbide sintered materials having a metallized surface which comprises applying a paste of a powder comprising 10 to 90% by weight of Si, balance a mixture of at least two components selected from Fe, Ni and Co to a sintered silicon carbide material and sintering at a temperature of 1100° to 1800° C. in a non-oxidative atmosphere.
Claim 3
Dependent Claim
52 words
The process for producing sintered silicon carbide materials having a metalized surface according to claim 1, wherein a powder obtained by alloying Si and a mixture of at least two components selected from Fe, Ni and Co at 1100° to 1800° C. in a non-oxidative atmosphere and powdering the same is used.
References Cited (Backward Citations)
US4040823A
Cited
US4214906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |