Patent US4606767A successfully refreshed from Google Patents.
US4606767A
Expired / Lapsed
US
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Decorative silver-colored sintered alloy
Assignee: Kyocera Corp
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Filing: 1985-10-28
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Granted: 1986-08-19
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Expires: 2005-10-28
Abstract
Abstract Disclosed is a decorative silver-colored sintered alloy comprising TiC, Cr3C2 and Ni in amounts of 50 to 98% by weight, 1 to 20% by weight and 1 to 30% by weight, respectively, based on the three components. In this sintered alloy, TiC is present in the form of the dispersed phase of particles and Cr3C2 and Ni are present in the form of a solid solution as the binder phase. This sintered alloy is excellent in the corrosion resistance and is capable of manifesting a mirror surface having a deep silver color.
Inventors
- 👤 Yoshio Nagato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:48
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/06; C22C29/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A decorative silver-colored sintered alloy, which comprises titanium carbide, chromium carbide and nickel, wherein titanium carbide is present in the form of the dispersed phase of particles in an amount of 50 to 98% by weight based on the three components, and chromium carbide and nickel are present in the form of the binder phase of a solid solution in amounts of 1 to 20% by weight and 1 to 30% by weight, respectively, based on the three components.
Claim 2
Dependent Claim
79 words
A decorative silver-colored sintered alloy, which comprises titanium carbide, chromium carbide and nickel, wherein titanium carbide is present in the form of the dispersed phase of particles in an amount of 50 to 98% by weight based on the three components, and chromium carbide and nickel are present in the form of the binder phase of a solid solution in amounts of 1 to 20% by weight and 1 to 30% by weight, respectively, based on the three components.
Claim 3
Dependent Claim
28 words
A sintered body as set forth in claim 1, wherein titanium carbide is present in the form of dispersed particles having a size of 3 to 4 μm.
Claim 4
Dependent Claim
21 words
A sintered alloy as set forth in claim 1, wherein chromium carbide has a composition of Cr 3 C 2 .
Claim 5
Dependent Claim
43 words
A sintered alloy as set forth in claim 1, wherein titanium carbide, chromium carbide and nickel are presents in amounts of 65 to 90% by weight, 5 to 15% by weight and 5 to 20% by weight, respectively, based on the three components.
Claim 6
Dependent Claim
77 words
A process for the preparation of a decorative silver-colored sintered body, which comprises homogeneously mixing titanium carbide powder, chromium carbide powder and nickel powder in amounts of 50 to 98% by weight, 1 to 20% by weight and 1 to 30% by weight, respectively, based on the three components, compression-molding the powdery mixture in a predetermined shape, and sintering the molded body in a non-oxidizing atmosphere or in vacuum at a temperature of 1300° to 1600° C.
Claim 7
Dependent Claim
77 words
A process for the preparation of a decorative silver-colored sintered body, which comprises homogeneously mixing titanium carbide powder, chromium carbide powder and nickel powder in amounts of 50 to 98% by weight, 1 to 20% by weight and 1 to 30% by weight, respectively, based on the three components, compression-molding the powdery mixture in a predetermined shape, and sintering the molded body in a non-oxidizing atmosphere or in vacuum at a temperature of 1300° to 1600° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |