US4603090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ductile titanium-indium-copper brazing alloy
Assignee: Osram Sylvania Inc
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Filing: 1984-04-05
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Granted: 1986-07-29
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Expires: 2004-04-05
Abstract
Abstract Brazing alloys of copper-indium-titanium alloy can be used to braze ceramic to metal. Other elements such as gold, manganese, palladium, nickel, aluminum, tin singly or in combination can also be added.
Inventors
- 👤 Howard Mizuhara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:41
CPC Classifications
C; C22; C22C; C22C9/00; B; B23; B23K; B23K35/00; B23K35/02; B23K35/0222; B23K35/0233; B23K35/22; B23K35/24; B23K35/30; B23K35/302; C04; C04B; C04B37/00; C04B37/003; C04B37/006; C04B37/02; C04B37/023; C04B37/026; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/124; C04B2237/125; C04B2237/126; C04B2237/127; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/36; C04B2237/368; C04B2237/40; C04B2237/405; C04B2237/406; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
An article consisting essentially of a ductile brazing foil suitable for brazing ceramic and having a composition consisting essentially of from about 0.1% about 5% by weight of a reactive metal selected from the group consisting of titanium, zirconium, vanadium and mixtures thereof, from about 1.0% to about 30% by weight of indium, from about 50% to about 99.8% by weight of copper.
Claim 2
Dependent Claim
63 words
An article consisting essentially of a ductile brazing foil suitable for brazing ceramic and having a composition consisting essentially of from about 0.1% about 5% by weight of a reactive metal selected from the group consisting of titanium, zirconium, vanadium and mixtures thereof, from about 1.0% to about 30% by weight of indium, from about 50% to about 99.8% by weight of copper.
Claim 3
Dependent Claim
61 words
A brazing foil consisting essentially of a ductile brazing alloy having a composition consisting essentially of from 0.1% to about 5% by weight of a reactive metal selected from the group consisting of titanium, zirconium, vanadium and mixtures thereof, from about 1.0% to about 30% by weight of indium, from about 3% to about 10% by weight of aluminum, balance copper.
Claim 4
Dependent Claim
61 words
A brazing foil consisting essentially of a ductile brazing alloy having a composition consisting essentially of from 0.1% to about 5% by weight of a reactive metal selected from the group consisting of titanium, zirconium, vanadium and mixtures thereof, from about 1.0% to about 30% by weight of indium, from about 3% to about 10% by weight of aluminum, balance copper.
Claim 5
Dependent Claim
73 words
A brazing foil consisting essentially of a ductile brazing alloy having a composition consisting essentially of from about 0.1% to about 5% by weight of a reactive metal selected from the group consisting of titanium, zirconium, vanadium and mixtures thereof, from about 1.5% to about 3% by weight of indium, from about 5% to about 20% of a precious metal selected from the group consisting of gold, palladium and mixtures thereof, balance copper.
Claim 6
Dependent Claim
73 words
A brazing foil consisting essentially of a ductile brazing alloy having a composition consisting essentially of from about 0.1% to about 5% by weight of a reactive metal selected from the group consisting of titanium, zirconium, vanadium and mixtures thereof, from about 1.5% to about 3% by weight of indium, from about 5% to about 20% of a precious metal selected from the group consisting of gold, palladium and mixtures thereof, balance copper.
Claim 7
Dependent Claim
12 words
An foil according to claim 3 wherein said precious metal is gold.
Claim 8
Dependent Claim
12 words
An foil according to claim 2 wherein said precious metal is palladium.
References Cited (Backward Citations)
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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) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |