US4574011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered alloy based on carbides
Assignee: Stellram SA
•
Filing: 1984-03-06
•
Granted: 1986-03-04
•
Expires: 2004-03-06
Abstract
Abstract The alloy of the invention comprises 75 to 90% by weight of a mixture of carbides, for example WC and TiC, and 10 to 25% of a binder. This binder comprises Co, Ni and Ru, representing together 7 to 15% of the alloy, as well as Mo 2 C. This alloy is useful for the production of decorative articles having a density similar to that of stainless steel.
Inventors
- 👤 Christian Bonjour
- 👤 Francois Duvanel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:19
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/06; C22C29/067; G; G04; G04B; G04B37/00; G04B37/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
91 words
Sintered alloy for use in the manufacture or ornamental articles and consisting essentially of 75 to 90% by weight of a mixture of carbides and 10 to 25% by weight of a binder, said binder consisting essentially of 60 to 70% by weight of Ni, Co and Ru, and 30 to 40% by weight of molybdenum carbide, and in which the Ru is present in a quantity of 10 to 25% of the whole of the three elements Co, Ni and Ru, the density of the alloy being 7.5 to 8.0.
Claim 2
Dependent Claim
91 words
Sintered alloy for use in the manufacture or ornamental articles and consisting essentially of 75 to 90% by weight of a mixture of carbides and 10 to 25% by weight of a binder, said binder consisting essentially of 60 to 70% by weight of Ni, Co and Ru, and 30 to 40% by weight of molybdenum carbide, and in which the Ru is present in a quantity of 10 to 25% of the whole of the three elements Co, Ni and Ru, the density of the alloy being 7.5 to 8.0.
Claim 3
Dependent Claim
24 words
Alloy according to claim 1, which is 83% of a mixture WC--TiC, 12% of Co, Ni and Ru, and 5% of Mo 2 C.
Claim 4
Dependent Claim
17 words
Alloy according to claim 2, which is 2% of Co, 8% of Ni and 2% of Ru.
Claim 5
Dependent Claim
14 words
Alloy according to claim 2, which is 41.5% of WC and 41.5% of TiC.
Claim 6
Dependent Claim
24 words
Alloy according to claim 1, which is 90% of a mixture WC--TiC, 7% of Co, Ni and Ru, and 3% of Mo 2 C.
Claim 7
Dependent Claim
24 words
Alloy according to claim 1, which is 75% of a mixture WC--TiC, 15% of Co, Ni and Ru and 10% of Mo 2 C.
Claim 8
Dependent Claim
27 words
Alloy according to claim 1, in which in the mixture of carbides a part thereof is replaced by at least a nitride and/or at least a boride.
Claim 9
Dependent Claim
19 words
Alloy according to claim 1, in which the Mo 2 C of the binder is partly replaced by HfC.
References Cited (Backward Citations)
GB622041A
Cited
FR1007185A
Cited
CH517963A
Cited
US3245763A
Cited
GB1282009A
Cited
FR2037801A5
Cited
FR2097258A5
Cited
EP0044351A1
Cited
FR2487380A1
Cited
GB2081741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-03 | 1989-09-02 | 1990-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-03 | 1993-09-02 | 1994-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-03 | 1997-09-02 | 1998-03-04 | $7700.00 | Window Closed / Lapsed |