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US4426033A
Expired / Lapsed
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Ductile titanium-copper brazing alloy
Assignee: Osram Sylvania Inc
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Filing: 1982-09-20
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Granted: 1984-01-17
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Expires: 2002-09-20
Abstract
Abstract Reactive metal-copper alloys containing specified amounts of a third metal selected from the group consisting of silicon, tin, germanium, manganese, nickel, cobalt and mixtures thereof are suitable for brazing ceramics, other non-metallic and metallic materials.
Inventors
- 👤 Howard Mizuhara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:59
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/302; C; C04; C04B; C04B37/00; C04B37/003; C04B37/006; C04B37/02; C04B37/023; C04B37/026; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/124; C04B2237/126; C04B2237/127; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/40; C04B2237/405; C04B2237/406; C04B2237/50; C04B2237/70; C04B2237/706; C04B2237/708; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
98 words
An article consisting essentially of a ductile brazing alloy foil, said alloy having a composition consistng essentially of from about 0.25% to about 5% by weight of a reactive metal, selected from the group consisting of titanium, vanadium, zirconium and mixtures thereof, from about 50% by weight to about 98.75% by weight of copper and from about 1% to about 45% by weight of a third metal selected from the group consisting of silicon, tin, germainium, manganese, nickel, cobalt and mixtures thereof wherein said alloy has a liquidus temperature of from about 870° C. to about 1170° C.
Claim 2
Dependent Claim
98 words
An article consisting essentially of a ductile brazing alloy foil, said alloy having a composition consistng essentially of from about 0.25% to about 5% by weight of a reactive metal, selected from the group consisting of titanium, vanadium, zirconium and mixtures thereof, from about 50% by weight to about 98.75% by weight of copper and from about 1% to about 45% by weight of a third metal selected from the group consisting of silicon, tin, germainium, manganese, nickel, cobalt and mixtures thereof wherein said alloy has a liquidus temperature of from about 870° C. to about 1170° C.
Claim 3
Dependent Claim
12 words
An article according to claim 1 wherein said reactive metal is titanium.
Claim 4
Dependent Claim
24 words
An article according to claim 2 wherein said third metal is tin in an amount of from about 1% to about 10% by weight.
Claim 5
Dependent Claim
24 words
An article according to claim 2 wherein said third metal is silicon in an amount of from about 1% to about 6% by weight.
Claim 6
Dependent Claim
25 words
An article according to claim 4 wherein said silicon is present in an amount of from about 2% by weight to about 4% by weight.
Claim 7
Dependent Claim
27 words
An article according to claim 2 wherein said third metal is nickel and is present in an amount of from about 2% to about 45% by weight.
Claim 8
Dependent Claim
27 words
An article according to claim 2 wherein said third metal is cobalt and is present in an amount of from about 2% to about 45% by weight.
Claim 9
Dependent Claim
22 words
An article according to claim 6 wherein nickel is present in an amount of from about 10% to about 20% by weight.
Claim 10
Dependent Claim
21 words
An article according to claim 7 wherein cobalt is present in amounts of from about 5% to about 15% by weight.
Claim 11
Dependent Claim
27 words
An article according to claim 2 wherein said third metal is manganese and is present in an amount of from about 5% to about 45% by weight.
Claim 12
Dependent Claim
24 words
An article according to claim 10 wherein manganese is present in an amount of from about 20% by weight to about 40% by weight.
Claim 13
Dependent Claim
26 words
An article according to claim 11 wherein said alloy has cobalt or nickel present in an amount of from about 5% to about 12% by weight.
Claim 14
Dependent Claim
40 words
A brazing alloy consisting essentially of from 0.25% to about 5% of titanium, from about 1% to about 10% by weight of tin, balance copper, said alloy having a liquidus temperature of from about 870° C. to about 1170° C.
Claim 15
Dependent Claim
40 words
A brazing alloy consisting essentially of from 0.25% to about 5% of titanium, from about 1% to about 10% by weight of tin, balance copper, said alloy having a liquidus temperature of from about 870° C. to about 1170° C.
Claim 16
Dependent Claim
45 words
A brazing alloy consisting essentially of from 0.25% to about 5% by weight of titanium, from about 20% to about 40% manganese, from about 5% to about 12% by weight of cobalt or nickel, and from about 50% to about 74.75% by weight of copper.
Claim 17
Dependent Claim
45 words
A brazing alloy consisting essentially of from 0.25% to about 5% by weight of titanium, from about 20% to about 40% manganese, from about 5% to about 12% by weight of cobalt or nickel, and from about 50% to about 74.75% by weight of copper.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |